Origin: The high Andes of Peru and Bolivia, in the region around Lake Titicaca.
The potato (Solanum tuberosum) belongs to the nightshade family, the Solanaceae, alongside the tomato, the aubergine, and the chilli, and it descends from wild tuber-bearing Solanum species that grow across the high Andean plateau around Lake Titicaca, at altitudes between 3,500 and 4,200 metres above sea level. Archaeological evidence from sites in southern Peru dates cultivation to approximately 8000 BCE, which places the potato amongst the very oldest cultivated crops of the Americas and roughly contemporary with the domestication of the great Old World cereals. The indigenous Andean peoples, working over many thousands of years in one of the harshest agricultural environments on earth, transformed a small, bitter, frost-vulnerable wild tuber into the foundation of an entire civilisation, and the patient selection that achieved this was amongst the most sophisticated feats of plant breeding in the ancient world.
The wild ancestors of S. tuberosum are laced with toxic glycoalkaloids (solanine and chaconine) that make them bitter and, in quantity, dangerous, and they bruise and freeze readily on the high plateau. Andean farmers selected, generation upon generation, for reduced toxicity, for larger tubers, for resistance to cold, and for the staggering diversity of colour, shape, and texture that survives in the Andes to this day. The result is one of the most genetically various crop species on earth: more than 3,000 distinct varieties remain in cultivation in the Andean highlands, ranging in colour from white and yellow through pink, red, and purple to a near-black, and in the markets of Cusco and Puno the potato is sold not as one vegetable but as dozens, each with its own name, season, and culinary purpose.
The Andean peoples did not merely grow the potato; they developed an extraordinary technology for preserving it. Chuño, the freeze-dried potato of the altiplano, is made by exposing tubers to the hard night frosts of the high plateau, then treading them underfoot to press out the moisture and drying them in the fierce daytime sun, the cycle repeated over several days until the potato is reduced to a hard, pale, lightweight nugget that may be stored for years without spoiling. Chuño could be carried as a strategic ration along the Inca road networks, stockpiled against famine, and traded between the highlands and the warmer valleys, and it gave the Andean states a food security that underwrote the rise of the Inca empire. From the cold sauces of the highland kitchen to the layered terrines of the coast, the Andes developed, and still possess, the most sophisticated potato cookery in the world, the living inheritance of ten thousand years of cultivation.
Spanish conquistadors, having toppled the Inca state in the 1530s, carried the potato back across the Atlantic to Spain by the latter half of the sixteenth century, where for several decades it was treated as a botanical curiosity, grown in monastery gardens and the cabinets of the learned rather than eaten at the common table. Europeans regarded the strange Andean tuber with deep suspicion: it belonged to the nightshade family, it was eaten not as fruit or grain but as a swollen underground stem, and it appeared nowhere in scripture, all of which marked it as unwholesome to a wary peasantry. It reached Ireland by about 1590, spread slowly through the kitchen gardens of seventeenth-century Europe, and only in the eighteenth century did it break out of the garden and become a mass food crop of the field.
The transformation owed much to determined royal and official advocacy. In Prussia, Frederick the Great issued a succession of orders compelling his reluctant subjects to plant the potato as a hedge against famine, and the famous tale that he posted guards over the royal potato fields, so that the peasantry, assuming that anything so closely watched must be valuable, would steal and spread the crop, captures the propaganda effort even if it is half legend. In France, the military pharmacist Antoine-Augustin Parmentier, who had survived on potato rations as a Prussian prisoner of war during the Seven Years' War, devoted his life to persuading a sceptical nation that the tuber was fit for human food, staging fashionable potato banquets and presenting potato flowers to Louis XVI and Marie Antoinette. By 1800 the potato had become the primary caloric source for tens of millions of Europeans, the engine of a population boom that reshaped the continent, for no other crop yielded so many calories from so small a plot of cold northern ground.
Nowhere was this dependence more total, or more catastrophic, than in Ireland. The potato's prodigious yield allowed the rural Irish poor to feed large families on minute holdings, and by the early nineteenth century millions subsisted on little else. When the water mould Phytophthora infestans arrived from the Americas in the 1840s and the blight it caused rotted the crop in the ground, the result was the Great Famine: between 1845 and 1852 more than a million people died of starvation and disease, and a further million emigrated, many of them to the cities of North America, where they would in time carry their own potato traditions. The Famine stands as the most terrible demonstration in history of the danger of a single crop monoculture, and it scattered the Irish across the world.
The potato's wider voyage was no less remarkable. It travelled with European empires and emigrants into every temperate and highland region of the globe: to the German and Slavic lands of central and eastern Europe, where it became the staple carbohydrate of the peasant kitchen; to the Mediterranean, where Greek and Italian cooks folded it into their own traditions; to the highlands of India, where it entered the curry pot; to East Africa, Japan, and the Andes' own diaspora. Carried back across the Pacific and the Atlantic, championed by kings and pharmacists, blamed for catastrophe and credited with the rise of nations, the humble Andean tuber became, within three centuries of leaving Lake Titicaca, one of the four pillars of the world's food supply.
The potato is the world's fourth-largest food crop by production volume, surpassed only by the three great cereals: maize, wheat, and rice. It is consumed in virtually every cuisine on earth, boiled, baked, fried, mashed, roasted, fermented, and dried, and it adapts to the cooking of every culture that has adopted it, taking on the flavours of the masala pot in Kashmir, the cream and nutmeg of the Alpine gratin, the soy and mirin of the Japanese home kitchen, and the curry base of the Natal Indian table with equal ease. Global production exceeds 390 million tonnes annually, with China, India, Russia, Ukraine, and the United States amongst the leading producers, and China alone now grows roughly a quarter of the world's crop, a striking inversion of the potato's origins.
Its rise to this eminence rests on a handful of qualities. The potato is exceptionally productive, yielding more calories per acre and per day of growth than any grain; it matures quickly, tolerates poor and cold soils that defeat wheat, and stores reasonably well, all of which made it the engine of European population growth in the eighteenth century and a standing weapon against famine across the northern hemisphere. Nutritionally it is far more than mere starch: it provides a valuable source of vitamin C, of potassium, of dietary fibre, and of complex carbohydrates, and through the long centuries of European history it kept scurvy and hunger at bay in populations that had little else.
The potato is also the raw material of the largest processed-food category derived from any single vegetable. The transformation of the tuber into the globally traded crisp and the frozen chip industries, the fast-food French fry above all, represents an industrial empire of staggering scale, and the potato underpins the snack-food economies of the whole developed world. Yet alongside this industrial ubiquity the potato remains the most intimate of domestic foods, the colcannon of an Irish kitchen, the latke of a Hanukkah table, the gnocchi of a Venetian Sunday, the dum aloo of a Kashmiri feast, present at the humblest and the grandest meals alike. From the freeze-dried chuño of the altiplano to the frozen chip of the global supermarket, no plant has been so completely and so variously absorbed into the diet of the human species.
Historical Journey of Potato
Andes, Peru and Bolivia — c. 8000 BCE
On the high plateau around Lake Titicaca, between 3,500 and 4,200 metres above sea level, the indigenous peoples of the Andes domesticated the potato (Solanum tuberosum) from its small, bitter, wild Solanum ancestors, beginning roughly ten thousand years ago and continuing across millennia of patient selection. In a landscape of thin air, fierce sun, and killing night frosts, they bred out the toxic glycoalkaloids of the wild tuber, multiplied its size, and developed the thousands of coloured, knobbled, frost-hardy varieties that still fill the highland markets, an achievement of plant breeding that underwrote the rise of the great Andean states and ultimately the Inca empire. They also invented chuño, the freeze-dried potato of the altiplano, preserved by repeated freezing, treading, and drying until it could be stored for years and carried as a ration along the Inca roads. The Andean kitchen remains the most sophisticated potato cookery in the world: papa a la huancaína, boiled yellow potatoes blanketed in a cold, creamy sauce of fresh cheese and yellow ají chilli, is one of its emblematic dishes, alongside the layered, lime-sharpened terrine of causa limeña and the fresh-cheese-enriched locro de zapallo of the highland pot.
Seville and Andalusia, Spain — c. 1570
The potato arrived in Spain from the conquered lands of the Andes in the latter part of the sixteenth century, carried back across the Atlantic in the holds of returning ships and landed at the great port of Seville, the hub through which the wealth and the strange new plants of the Americas entered Europe. At first the Spanish treated it as a curiosity rather than a food, grown in monastery gardens and studied by physicians who were uncertain whether the nightshade tuber was wholesome, and it spread slowly and warily through Iberia over the following decades. In time, however, the potato shed its suspicious reputation and became one of the most beloved ingredients of the Spanish table, absorbed so completely that it now seems native to the cuisine. It is the soft, golden heart of the tortilla española, the thick potato and egg omelette cooked slowly in olive oil that is the most universal dish of the Spanish kitchen, eaten at every hour and in every region, and it is the substance of patatas bravas, the fried potato cubes drenched in a sharp, smoky, paprika-spiked tomato sauce that anchor the tapas table of every Spanish bar. From a guarded botanical specimen in a Seville garden, the potato became a Spanish staple.
Ireland — c. 1600
The potato reached Ireland around the turn of the seventeenth century, and within a few generations it had transformed the island's entire food system more completely than in any other country in Europe. The reasons lay in the crop's extraordinary productivity: an acre of potatoes yielded far more food than an acre of grain, it grew well in the cool, damp Irish climate and the poor, boggy soils of the west, and it could be cultivated on the tiniest of plots with little more than a spade. This allowed the rural Irish poor, squeezed onto ever-smaller holdings, to sustain large families on the potato alone, and by 1800 it had become the primary food of over three million people. The Irish kitchen built a whole tradition upon it: colcannon, creamy mashed potato folded through with cabbage or kale and melted butter, became a dish of homely comfort and of Hallowe'en ritual, and boxty, the potato pancake made half from grated raw potato and half from mash, gave the country its own distinctive griddle bread. Yet this very dependence carried within it the seeds of catastrophe, for a nation that ate one crop would starve if that crop failed, as the blight of 1845 would prove with horrifying force.
Dutch Republic (Leiden and Amsterdam) — c. 1610 CE
The potato reached the Dutch Republic in the closing years of the sixteenth century, and it was here, in the botanical garden of the University of Leiden, that the great Flemish botanist Carolus Clusius cultivated and documented it in the 1590s, distributing tubers to gardens across Europe and helping to turn a New World curiosity into a European crop. The Dutch took to the potato with characteristic practicality, and it became a cornerstone of the plain, warming winter cooking of the Low Countries: mashed with kale or sauerkraut and crowned with smoked rookworst sausage as stamppot, or boiled and crushed together with carrot and onion as hutspot, the dish bound by legend to the relief of Leiden in 1574. The Dutch Republic was also the springboard from which the potato sailed east: the ships of the Dutch East India Company carried it to their colony at Batavia and on to the trading post at Nagasaki, planting it in Japan, where its name jagaimo still records its arrival by way of Jakarta.
Scotland: the Orkney Islands and Highlands — c. 1620
The potato reached Scotland in the early seventeenth century, travelling north largely by way of Ireland, and it found in the cold, wet Highlands and the windswept northern islands a landscape that suited it as few crops could. In the thin, sour soils of the glens and the Orkney and Shetland isles, where grain ripened poorly and the growing season was short, the hardy and prolific tuber became fundamental to island and Highland cooking, a reliable bulwark against the hunger that haunted the marginal north. Out of this northern adoption came one of the oldest and most distinctly Scottish of all potato dishes: clapshot, the Orkney preparation in which boiled potato and turnip (the swede, or 'neep') are mashed together with chives and a generous knob of butter or beef dripping, traditionally served alongside haggis or a plate of mince. Simple, warming, and rooted in the produce of a hard climate, clapshot embodies the way the Andean tuber was woven into the food of even the bleakest corners of northern Europe, becoming so familiar that it now seems as native to Orkney as the neep beside it.
France: the Dauphiné and Paris — c. 1720
France long resisted the potato, which its physicians suspected of causing disease and its peasantry scorned as fit only for pigs, until the military pharmacist Antoine-Augustin Parmentier took up its cause in the second half of the eighteenth century. Parmentier, who had survived as a prisoner of war in Prussia on a diet of the despised tuber, devoted himself to its rehabilitation, presenting potato flowers to Louis XVI and Marie Antoinette, hosting fashionable banquets at which every course was made of potato, and famously posting guards over a potato field by day so that the curious populace would steal the crop by night. Persuaded at last, the French kitchen turned the potato into some of the most refined preparations in the world. From the Alpine valleys of the Dauphiné came gratin dauphinois, thin discs of potato baked slowly in cream and garlic until meltingly soft beneath a golden crust; the Belle Époque produced vichyssoise, the silky cold soup of leek and potato finished with cream; and the potato found its place in the great boiled dinner of pot-au-feu. From peasant suspicion to haute cuisine, the potato became a cornerstone of French cooking.
Prussia and the German states — c. 1750
In the German states the potato owed its triumph above all to Frederick the Great of Prussia, who recognised in the prolific tuber a defence against the recurring famines that followed war and crop failure, and who issued a succession of royal orders, the so-called Kartoffelbefehle or potato edicts, commanding his reluctant subjects to plant it. The peasantry, distrustful of the strange foreign crop, resisted until persuaded by a mixture of compulsion and cunning; the celebrated story that Frederick had guards posted over his potato fields, so that the people, reasoning that anything so jealously protected must be precious, would steal and propagate it, has fixed the king's name to the potato's German success, and grateful Germans still lay potatoes on his tomb at Potsdam to this day. Within a generation the potato had become the dominant food crop of the German lands and the foundation of a rich tradition of potato cookery: the warm Swabian Kartoffelsalat, sliced potatoes dressed whilst still hot with bacon, stock, and vinegar rather than mayonnaise, and the simple, comforting Petersilienkartoffeln, new potatoes turned in butter and chopped parsley, became fixtures of the German table that endure unchanged today.
Poland and Eastern Europe — c. 1780
The potato spread rapidly through Poland and the Slavic lands in the later eighteenth century, arriving for the most part by way of Germany and the Prussian partitions, and within a few decades it had become the dominant carbohydrate crop of the Polish-Lithuanian Commonwealth and the staple of the eastern European peasant kitchen. The cold continental climate, with its long winters and short summers, suited the hardy tuber admirably, and it could be stored through the dark months in cellars and clamps when little else grew, making it the dependable foundation of the winter diet across Poland, Lithuania, Belarus, and Ukraine. Polish cooks folded the new crop into their existing love of the filled dumpling, and from this union came pierogi ruskie, the half-moon dumplings stuffed with a mixture of mashed potato and tangy farmer's cheese (twaróg), boiled and then often crisped in butter with fried onions, which became the most iconic dish of the entire eastern European table. Eaten at the everyday supper and at the great feasts of Christmas Eve alike, the potato pierogi carried the Andean tuber into the very heart of Slavic culinary identity.
Russia and the Russian Empire — c. 1800
The potato established itself across the vast expanse of the Russian Empire over the course of the nineteenth century, promoted by the state as a guard against the famines that periodically scourged the country, though not without resistance: the so-called potato riots of the 1840s saw peasants rise against the compulsory cultivation of a crop they distrusted as the 'devil's apple'. Yet the tuber was supremely suited to Russia, resistant to the bitter northern cold, enormously productive, and entirely compatible with a national cooking already built around the root vegetable and the cellar store, and it became in time the indispensable foundation of the Russian winter diet. Russian cookery developed its own distinctive potato canon, the most famous expression of which is the Olivier salad, a rich composition of diced boiled potato, vegetables, egg, and meat bound in mayonnaise that was created by a Belgian-French chef in nineteenth-century Moscow and that became, in its Soviet-era form, the obligatory centrepiece of the New Year's table across the entire Soviet Union and its successor states, where it is prepared in vast quantities every December still.
Northern Italy: Veneto and Friuli — c. 1820
Italy was slow to embrace the potato, regarding it for two centuries as livestock fodder or famine food, but in the cooler north, in the Veneto and Friuli where maize and rice already softened the rigid grain economy of the south, the tuber found at last a worthy culinary purpose. Italian cooks discovered that boiled, riced potato, worked with a little flour and egg into a soft dough, produced one of the most delicate of all the country's many doughs: gnocchi di patate, the small, pillowy potato dumplings rolled against the tines of a fork and dropped into boiling water to rise tender to the surface. Dressed simply with melted butter and sage, or with a fresh tomato sauce, or with the rich cheese sauces of the Alpine valleys, gnocchi became one of Italy's most beloved regional pasta dishes, traditionally eaten on a Thursday in Roman custom. The potato entered the Italian repertoire in humbler guises too, roasted in olive oil with rosemary and garlic as patate arrosto al rosmarino, the fragrant golden potatoes that accompany the Sunday roast, proving that even a latecomer could be naturalised completely into the Italian kitchen.
Greece — c. 1828 CE
The potato reached the newly independent Greek state through Ioannis Kapodistrias, the first head of state, who promoted it as a food for a country recovering from war. By a famous tale, finding the Greeks indifferent to the strange tuber, he had a shipment unloaded onto the docks of Nafplio under armed guard; passers-by, assuming that anything so guarded must be precious, began to steal the potatoes, and so the crop took hold. However it happened, the potato became a fixture of the Greek table, and nowhere more beloved than as patates riganates (or lemonates), thick wedges roasted in lemon juice, olive oil, and a generous hand of oregano until soft within and crisp without, the classic accompaniment to the Sunday roast and a glory in their own right. The same lemon, oregano, and olive oil treatment defines kotopoulo riganato, the roast chicken and potatoes baked together in one tray so that the potatoes drink up the lemony, herb-scented juices of the bird, a dish of the Greek family table at its most generous and unpretentious, and a measure of how completely a country can claim a crop it adopted barely two centuries ago.
Kashmir and North India — c. 1850
The potato reached India through the Portuguese at Goa in the sixteenth century, but it spread inland only slowly, becoming a significant crop in the north and in Kashmir during the nineteenth century, where the cool Himalayan climate suited it and where British and Mughal-influenced kitchens alike took it up with enthusiasm. In Kashmir it gave rise to dum aloo, whole baby potatoes first fried and then slow-cooked in a sealed pot (the 'dum' method) in a sauce thick with yoghurt, fennel, and dried ginger, which became one of the most celebrated dishes of the Kashmiri Pandit vegetarian tradition. Bengal, too, adopted the potato with singular devotion, folding it into the characteristically dry, vegetable-forward preparations of the Vaishnava kitchen, amongst them chorchori, a dry-cooked medley of seasonal vegetables in mustard oil and turmeric; kumro chorchori, the homely dry preparation of pumpkin and potato tempered with panch phoron, the Bengali five-spice mixture, and mustard oil, became one of the most representative everyday dishes of the Bengali household. Across the north the potato joined the cauliflower in aloo gobi, the dry-spiced curry of countless Indian tables, the Andean tuber wholly absorbed into the subcontinental kitchen.
London and industrial England — c. 1860
In the crowded industrial cities of Victorian England the potato met the fried fish of immigrant Jewish cooks, and out of that meeting came fish and chips, the most important contribution of the British working class to world food culture. The tradition of frying battered fish had been brought to England by Sephardic Jewish settlers, whilst the deep-fried potato chip arrived from the Belgian and northern English frying traditions; their union in the back streets of London and the industrial north produced a cheap, hot, filling meal that fed the labouring poor of the factory age and became a national institution. By the 1930s there were over 35,000 fish-and-chip shops across Britain, wrapping their wares in newspaper and dousing them in salt and malt vinegar, and the dish sustained the country through two world wars when it was one of the few foods never rationed. London held fast to an older potato tradition too, in the pie and mash shops of the East End, where minced-beef pies and a scoop of mashed potato were served beneath a luminous green parsley liquor traditionally thickened with the cooking water of stewed eels, the comfort food of working London.
KwaZulu-Natal, Colony of Natal — c. 1865
The potato enters the cooking of KwaZulu-Natal's Indian community as a versatile, affordable carbohydrate that integrates naturally into the curry tradition brought from Tamil Nadu, Andhra Pradesh, and Bihar by the indentured workers settled in Natal from 1860 onwards. The potato absorbs spice and fat with the same generosity it shows in every culture that has adopted it; in the Natal Indian kitchen, it is braised in the same masala base as mutton, coloured deeply with turmeric, and cooked until tender enough to collapse slightly at its edges and absorb the dark, spiced gravy entirely. Durban mutton curry, with its long-cooked potato pieces that begin to dissolve into the sauce whilst retaining their body, becomes one of the defining markers of this transplanted culinary tradition; potatoes cooked this way are inseparable from the flavour and texture of what South Africa recognises as Durban curry. The same potato finds its way into the bunny chow, the hollowed half-loaf of white bread filled with curry that is Durban's great street food, soaking up the gravy as the bread does, so that the Andean tuber became one of the quiet foundations of a wholly new Indian Ocean cuisine.
Belgium: Namur and the Meuse Valley — c. 1870
Belgium lays a legitimate and fiercely defended claim to the invention of the fried potato strip, the frite, and treats it as nothing less than a pillar of national identity. Tradition holds that the people of the Meuse Valley around Namur, accustomed to frying the small fish of the river, took to cutting potatoes into the shape of little fish and frying those instead when the winter waters froze over and the catch failed; street vendors are documented deep-frying potato strips there in the 1780s, and by the 1870s the Belgian frite, cut thick and fried twice for a crisp shell and a fluffy heart, had become a national institution sold from the ubiquitous friterie or fritkot. The Belgians eat their frites with mayonnaise rather than vinegar, served in a paper cone, and pair them above all with mussels in the national dish of moules-frites, a steaming pot of mussels opened in white wine, butter, shallot, and parsley set beside a heap of golden double-fried frites, the briny shellfish and the crisp potato together forming one of the great everyday pleasures of the Belgian table.
Sweden and Scandinavia — c. 1890
The potato had taken firm root in Sweden during the eighteenth century, championed by the chemist and agriculturalist Eva Ekeblad, who discovered how to make flour and spirits from it, and by the late nineteenth century it stood at the very centre of Scandinavian cooking, suited as it was to the cold northern soils where grain struggled. Out of this deep familiarity Sweden produced one of the world's most unexpected potato classics: Janssons frestelse, or Jansson's Temptation, a baked gratin in which matchsticks of potato are layered with sweet fried onion and the small, spiced Swedish sprats sold as 'anchovies', the whole bound in cream and baked until golden and bubbling, the pickling spices of allspice and a little sugar lending it a haunting sweet-savoury depth. The dish became an anchor of the Swedish smörgåsbord, the lavish spread of cold and hot dishes that defines Scandinavian festive eating, and above all a fixture of the Christmas julbord, where it is served alongside the cured fish, the cold cuts, and the meatballs of the midwinter feast, the humble potato dignified into one of the great comfort dishes of the Nordic table.
New York City: the Jewish Lower East Side — c. 1900
The great wave of eastern European Jewish immigration that crowded into New York's Lower East Side around the turn of the twentieth century brought with it the potato traditions of the Pale of Settlement, transplanting the cooking of Poland, Lithuania, and Ukraine into the tenements of Manhattan. Chief amongst these dishes was the latke, the crisp fried pancake of grated potato bound with onion, egg, and a little flour or matzo meal, fried in oil until lacy and golden at the edges, traditionally eaten at Hanukkah, when the oil in which it is cooked recalls the miracle of the Temple lamp that burned for eight days. In the New World the latke flourished, served with apple sauce or sour cream, and it became one of the most culturally resonant of all Ashkenazi Jewish dishes and one of the most beloved potato preparations in American cooking, its smell filling apartment buildings every December. Through the latke and the kugel and the knish, the Andean tuber, already the staple of the old country, became woven into the very fabric of American Jewish identity and the wider American kitchen.
New England, USA — c. 1920
The fishing communities of the New England coast, heirs to the cod and shellfish wealth of the North Atlantic, combined their abundant harvest of clams with the potato to produce one of the most iconic of all American regional dishes: New England clam chowder. Thick, pale, and rich, the chowder is built upon diced potato simmered until tender in a base of salt pork, onion, and cream or milk, then enriched with sweet, briny clams and their liquor, a soup that turned the humble produce of the shore and the field into the defining dish of the Northeast coast. The word 'chowder' itself derives from the French chaudière, the great cooking pot in which the fishing communities of Brittany and the maritime provinces stewed their catch, and the dish came south with French and English settlers to become a fixture of the clam shacks and chowder houses of Massachusetts, Rhode Island, and Maine. The potato here is no mere thickener but the very body of the chowder, lending its starch to the cream and its soft bulk to the bowl, the Andean tuber naturalised utterly into the food of the American shore.
Japan — c. 1940
The potato had reached Japan through the Dutch trading post at Nagasaki in the seventeenth century, carried from the Dutch East Indies (whence its Japanese name jagaimo, from Jakarta), but it became central to Japanese home cooking only in the twentieth century, as Western influence and the demands of a modernising nation reshaped the everyday table. Its most beloved expression is nikujaga, literally 'meat and potato', a homely stew of potato, thinly sliced beef or pork, onion, and sometimes carrot simmered in a sweet-savoury broth of soy sauce, mirin, sake, and dashi until the potatoes are soft and saturated with the dark, glossy liquor. The dish is said to have originated when a Meiji-era admiral of the Imperial Japanese Navy, having tasted beef stew abroad, asked his cooks to recreate it and was given instead this soy-seasoned approximation, and it became a staple of the naval galley before spreading to the nation's kitchens. Today nikujaga is the very archetype of ofukuro no aji, the taste of mother's home cooking, the comforting dish by which Japanese home cooks are judged, the Andean tuber at the heart of Japanese domestic warmth.
Kenya and East Africa — c. 1960
The potato became a major food crop of the East African Highlands of Kenya and Ethiopia over the course of the twentieth century, introduced by European settlers in the cool, fertile uplands during the late nineteenth century and adopted enthusiastically into local cooking after independence, when it spread from the settler farms into the smallholdings of the Kikuyu and other highland peoples. The high altitude and temperate climate of the central Kenyan highlands around Mount Kenya proved ideal for the crop, and the potato slotted naturally into the existing tradition of mashed and pounded staple foods. From this came irio, the Kikuyu dish in which potatoes are boiled and mashed together with green peas, kernels of maize, and greens such as pumpkin leaves or spinach, the whole pounded into a thick, speckled green mash that is one of the most nutritionally complete and culturally significant dishes of the Kenyan kitchen, eaten with roasted meat or a rich stew. Through irio and the ubiquitous potato of the East African stew pot, the tuber born ten thousand years before on the far side of the world in the Andes found a final home in the highlands of equatorial Africa.
