Bhatmas ko tarkari (black soybean curry)

Instructions

1. Drain the soaked soybeans and cook them in unsalted water for 1 to 1 hour 15 minutes, until very tender.
2. In a heavy pot, heat the oil and brown the sliced onions for 8 minutes.
3. Add the garlic, ginger and chili, then stir for 2 minutes.
4. Stir in the chopped tomatoes and let them break down for 5 minutes.
5. Add the turmeric, cumin and salt, then the drained soybeans with 2 ladles of their cooking water.
6. Simmer uncovered for 15 minutes so the sauce thickens.
7. Finish with the garam masala and coriander, then serve with rice.