Grind together basmati, cooked rice and coconut along with 1/2 cup water finely.
Keep aside in a warm place for fermenting. :- It will definitely ferment when kept overnight. If you live in a cold region, keep the vessel in hot water.
Add water, salt, a pinch of soda bicarb and a tsp of sugar to the fermented batter.
For making stew:-
In a pressure cooker, saute the onion, ginger, garlic, small onions and green chillies.
When onion starts becoming transluscent, add the vegetables and stir.
Add coriander pwder and stir for 1 min.
Add 1 cup of thin coocnut milk and mix well.
Cook on high flame upto 1 whistle and later, on low flame for 5 mins.
After the pressure settles, add the thick coconut milk and stir.
Add garam masala. :- Do not heat after this.
Add pepper if needed. :- A tsp of Ari podi(Rice flour) can be added to make the stew thick.
Splutter mustard seeds, small onions, dry red chillies and curry leaves in ghee.