Heat oil in a pan, add mustard seeds, cumin seeds, bay leaves, curry leaves, and asafoetida (hing).
Add chopped onion and saute until golden brown.
Add (ginger-green chillies-garlic and dry coconut) paste. Saute for a minute.
Add turmeric powder and tomato, cook for 2 minutes.
Add salt, garam masala powder, and coriander-cumin powder. Mix well.
Add Kolhapuri masala powder and mix well.
Add soaked toor dal (split pigeon peas) and masoor dal (red lentils). Saute for a minute.
Add potato pieces and saute for 2 minutes.
Add warm water and mix well.
Cook on medium heat until done. (For a cooker, cook for 3 whistles on low heat.)
The Dal Batata Rassa Recipe is ready to serve.