Khatti Dal is a flavorful Indian dish that captures the essence of traditional home cooking. This family recipe is passed down through generations and remains a cherished part of Indian culinary culture.
Rinse the split pigeon peas thoroughly and soak in water for 30 minutes to soften.
Boil the soaked dal with 4 cups of water, turmeric powder, and salt over medium heat in a heavy-bottomed pot. Simmer gently for 30–40 minutes, stirring occasionally to prevent sticking, until the dal is soft.
Mash the cooked dal with a spoon or whisk. Add chopped tomato, onion, and green chili. Continue simmering for 10 minutes until the vegetables are softened.
Mix in tamarind pulp and ground cumin, adjust salt as needed, and simmer uncovered for another 7–8 minutes until the dal thickens slightly and flavors merge.
For tempering, heat vegetable oil in a small pan over medium-high heat. Add mustard seeds, let them splutter, then add curry leaves and chili powder. Immediately pour the aromatic tempering over the simmering dal, stir well, and serve hot.