Adapted from Anupy Singla's The Indian Slow Cooker. I've adapted the recipe for the stove, since red lentils cook so quickly. But if you want to use a slow cooker, Singla recommends cooking the lentils on low for 5 1/2 hours and then for another 30 minutes after adding the coconut milk. Also: 1) I've dialed down the spice; free free to add a couple of finely chopped serrano chiles at the beginning. 2) If you don't have curry leaves, don't worry -- it still tastes wonderful. And it freezes beautifully. —Nicholas Day
red lentils (masoor dal)
medium yellow or red onion, roughly chopped
tomatoes, canned or fresh, finely chopped
black or yellow mustard seeds
medium red or yellow onion, finely chopped
fresh or frozen curry leaves (optional but worth seeking out, up to 20 to taste)
In a large saucepan, combine the lentils, coarsely chopped onion, tomatoes, cayenne, ground cumin, coriander, turmeric, and salt. Add 7 cups of water and bring to a simmer. Cook uncovered for about 30 minutes, or until the lentils begin to break down.
In a frying pan, warm the vegetable oil over medium to high heat. Once the oil is hot, add the cumin seeds and the mustard seeds. Cover the pan and wait briefly until the mustard seeds begin to pop. Then add the finely chopped onion and the curry leaves and cook, stirring to prevent the leaves from burning, until lightly browned.
Add the curry leaf mixture to the lentils along with the coconut milk. Cook for another 10 minutes or so, until the flavors have melded.