Boniato Asado con Miel de Palma

the elemental sweet of the Canary Islands: whole sweet potatoes baked slowly in their skins until the flesh is caramelised and yielding, split open and served with a generous pour of miel de palma — the intensely smoky-sweet dark syrup made from Canarian date palm sap

Origin: Seville and the Canary Islands, Spain

From the journey of Sweet Potato.

The Canary Islands received the sweet potato before almost anywhere else in the Old World. Columbus brought specimens to Spain in 1493, and by the early sixteenth century the Canarian climate (subtropical, frost-free, and irrigated) had made the islands among the first sustained farming regions for the crop outside the Americas. The Spanish royal court received preserved batatas as gifts from the Canaries, and the islands became the transit point for the plant's first European diffusion, with plantings reaching mainland Spain and from there to the Dutch republic. The pairing with miel de palma is specifically Canarian. The miel de palma (palm honey) of the Canaries is produced by tapping the inflorescence of the Canarian date palm (Phoenix canariensis) to collect its sugary sap, which is then slow-boiled until it reduces to a thick, intensely flavoured dark syrup with notes of caramel, smoke, dried fruit, and a faint mineral quality distinct from any cane-derived sweetener. The combination of the caramelised flesh of the baked sweet potato with the complex dark sweetness of the miel de palma is one of those rare pairings where both components are transformed by the encounter: the sweet potato becomes more interesting, the palm honey less overwhelming. Outside the Canaries, dark unsulphured molasses or date syrup is a reasonable approximation.

Ingredients

Boniato

  • 4 medium sweet potatoes (about 250 g each), scrubbed, skin on
  • 1 tbsp fine sea salt, for the baking tray

To Serve

  • 4 tbsp miel de palma (Canarian palm honey), or substitute dark unsulphured molasses or date syrup
  • 30 g unsalted butter (optional, for serving)
  • 1 pinch fine sea salt flakes, for finishing

Method

  1. Preheat the oven to 200°C / 180°C fan. Scatter a thin layer of coarse sea salt across a baking tray — this is the traditional Canarian method, which draws moisture from the skin and helps it crisp. Place the sweet potatoes directly on the salt.
  2. Bake for 50–60 minutes, turning once at the halfway point, until the skin is dry, slightly wrinkled, and the tip of a knife slides through the centre of the thickest part with no resistance whatsoever. The base of the sweet potato in contact with the salt may have developed a slightly crisped, caramelised patch, which is desirable.
  3. Split each sweet potato along its length with a firm cut. If using, place a small pat of butter inside each split and leave for 30 seconds to melt into the flesh.
  4. Drizzle a generous tablespoon of miel de palma over the open flesh of each sweet potato. The syrup will sink into the yielding flesh and pool in the base of the split. Finish with a pinch of sea salt flakes and serve immediately.

Notes

This recipe requires almost nothing beyond time: the quality of the sweet potato and the miel de palma carry the dish. For the fullest flavour, choose sweet potatoes with a copper-orange skin and vivid orange flesh; avoid the pale-skinned, cream-fleshed varieties, which are less sweet and less suited to this preparation. Miel de palma de La Gomera is considered the finest; the protected designation applies to syrup made on the island of La Gomera using traditional methods. A drizzle of almond cream or a spoonful of Canarian gofio (toasted grain flour) stirred into the flesh makes a more substantial version for a light meal.

The Gastrographer

The Gastrographer

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Ingredient originTrade or transit route
Became a culinary stapleColonial / trade control
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