Broad beans/sem/ avarakkai gravy

Broad beans/ sem/ avarakkai 1/4 kg cut in small pieces      peas 1 cup
 potatoes washed, peeled & cut into small pieces 2/3
pressure cook all these/ or you can cook in the gas too with turmeric pdr 1/2 tsp & salt to taste in cooker for 2-3 whistles. Grind 1 cup coconut grated/ powder , 5-6 green chilies or to taste with 1 tsp cumin seeds/ jeera.
Mix these with the cooked vegetables, boil well. Season it in 1 tsp oil, 1/2 tsp mustard seeds & 2 tsp udad dal. Garnish with corainder leaves. This goes well with roti & thiruvadiarai kali that we South Indians make.