Cooking the Kala Chana:
In a pressure cooker, combine sprouted kala chana with a little salt and enough water. Cook for 3-4 whistles or until the chickpeas are tender. Set aside.
Preparing the Vatan (Masala Paste):
Heat oil in a pan. Once hot, add chopped onion, garlic, ginger, and green chilies. Sauté until the onion turns golden brown.
Add dried coconut slices, coriander seeds, black peppercorns, and dried red chilies. Stir-fry on medium flame until the coconut slices turn golden. Allow the mixture to cool, then blend it with coriander leaves and ¼ cup water to form a smooth paste.
Cooking the Usal:
Heat oil in a large pan. Add mustard seeds and cumin seeds and let them crackle. Incorporate a pinch of hing and curry leaves.
Add dry whole spices like bay leaves, whole red chili, black cardamom etc. Add chopped onion and sauté until golden brown.
Stir in the prepared vatan, followed by dry spices like red chili powder, turmeric, coriander powder, goda masala. Cook the mixture until aromatic.
Add ½ cup water and bring the mixture to a boil (use cooked chana water.). Mix in the cooked kala chana, chopped tomato, and salt.
Adjust the consistency by adding more water if needed. Cover and cook on medium flame for 5-6 minutes. Garnish with chopped coriander leaves.
Serve hot with rice, chapati, or bhakri.