1 tablespoon milk
For the tadka:
1 1/2 tablespoons ghee
1 heaping teaspoon brown mustard seeds
6 or 7 fresh kari (curry) leaves (see Recipe Notes)
Before prepping the ingredients, turn the slow cooker on to the high setting for 15 minutes, until the insert is warmed through.
Pick over the lentils for any foreign objects. Wash the lentils in a bowl in several changes of water until the last wash runs almost clear. Place the lentils, along with the water, onion, garlic, ginger, chiles, and salt, in the cooker. Stir well and set to cook on high for 2 1/2 hours. When the lentils are cooked, they will be pale yellow in color. Add the lemon juice, stir, and adjust the seasoning, adding more lemon juice if preferred. Add the milk and stir.
To make the tadka, heat the ghee in a small saucepan or skillet, with a lid handy. Tilt the pan to form a pool, add the mustard seeds and kari leaves, and cover immediately.
Once the seeds have finished sputtering, add the tadka to the lentils, stir, and serve hot.
Reprinted with permission from The New Indian Slow Cooker by Neela Paniz, copyright (c) 2014. Published by Ten Speed Press.