Ndengu

the Kenyan mung bean stew: beans boiled soft then simmered down in a thick coconut and tomato sauce with onion, garlic, and curry powder, and eaten with chapati or ugali

Origin: Kenya

From the journey of Mung Bean.

East Africa took up the mung bean for exactly the reasons Indian farmers had four thousand years earlier. The semi-arid country of eastern Kenya and central Tanzania is marginal for maize and reliable for very little else, and a pulse that finishes in sixty to ninety days, fixes its own nitrogen, and survives a short and unpredictable rain is precisely what such land wants. The bean arrived with Indian Ocean trade and with the South Asian communities established along the Swahili coast and later along the Uganda Railway, and it spread inland through the twentieth century as a smallholder crop; Kenya now grows it across Machakos, Kitui, Makueni, and the Eastern counties both for the domestic table and, increasingly, for export back to India, so that the region has joined the small group of producers whose crop largely feeds someone else's cuisine. Kenya calls it ndengu, or pojo on the coast, and what it cooks is genuinely its own: the coconut comes from the Swahili coast and its centuries of monsoon trade, the curry powder and the technique of finishing a pulse in a fried tomato base come from the Indian presence, and the dish's standing as an everyday vegetarian main comes from the plain fact that it is a great deal cheaper than meat. It is a staple of the kibanda, the roadside food stall, and of the home kitchen alike.

Ingredients

Beans

300 g whole green mung beans (ndengu)
1.2 litre water

Stew

3 tbsp neutral oil
1 whole large onion, finely chopped
4 clove garlic, finely chopped
20 g fresh ginger, finely grated
4 whole tomatoes, chopped, or 400 g tinned chopped tomatoes
2 tsp curry powder
1 tsp ground cumin
0.5 tsp ground turmeric
400 ml coconut milk
1.5 tsp fine salt, or to taste
1 whole green chilli, slit (optional)

To Finish

1 handful coriander leaves, chopped

To Serve

1 whole lime, cut into wedges, to serve

Method

Rinse the mung beans, discarding any that float, and soak in cold water for at least 4 hours or overnight. Drain, put in a pan with the water, bring to the boil, skim, and simmer for 30 to 35 minutes until soft.
Meanwhile heat the oil in a wide pan and cook the onion over a medium heat for 8 to 10 minutes until soft and beginning to colour, then add the garlic and ginger for a further minute.
Add the curry powder, cumin, and turmeric and fry for 30 seconds, then the tomatoes. Cook down for 8 to 10 minutes, pressing them with the spoon, until they collapse and the oil begins to separate at the edges.
Tip in the cooked beans with their liquid and the slit chilli, stir, and simmer for 10 minutes. Mash a ladleful of the beans against the side of the pan and stir back in to thicken.
Pour in the coconut milk and the salt and simmer gently, uncovered, for a further 8 to 10 minutes until thickened. Do not let it boil hard. Stir through the coriander and serve with chapati, ugali, or rice and a wedge of lime.

Notes

Kenyan cooks vary this a great deal: some leave the coconut out entirely for an inland version, some add potato or carrot to stretch it, and some finish with a spoonful of tamarind or lime for sharpness. Ready-made curry powder is entirely authentic here and is what the Kenyan kitchen actually uses, being an inheritance of the East African Indian presence rather than an approximation of anything. Ndengu keeps four days refrigerated and is better on the second day; it thickens as it stands and should be let down with water when reheating. It is eaten as a main dish with chapati above all, which the Swahili coast and the interior both make in the Indian manner, and it also goes with ugali, the stiff maize porridge, and with plain rice. The same beans are also boiled plain and eaten as a simple side, and are sold sprouted in Nairobi markets.

The Gastrographer

Name: Ndengu
Prep time: 10 min
Cook time: 50 min
Total time: 5 h
Yield: 5
Cuisine: Kenya
Ingredients: 300 g whole green mung beans (ndengu); 1.2 litre water; 3 tbsp neutral oil; 1 whole large onion, finely chopped; 4 clove garlic, finely chopped; 20 g fresh ginger, finely grated; 4 whole tomatoes, chopped, or 400 g tinned chopped tomatoes; 2 tsp curry powder; 1 tsp ground cumin; 0.5 tsp ground turmeric; 400 ml coconut milk; 1.5 tsp fine salt, or to taste; 1 whole green chilli, slit (optional); 1 handful coriander leaves, chopped; 1 whole lime, cut into wedges, to serve

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Journey Point Map Key

Ingredient originTrade or transit route

Became a culinary stapleColonial / trade control