Heat oil in a pressure cooker and add urad dal, mustard seeds, curry leaves, Green chillies, garlic and onions. Fry till onions turn brown
Add powdered spices and saute. Add ginger garlic paste and cook till the raw smell goes
Add the cluster beans and potatoes. Stir fry for a minute.
Add dil leaves, coriander leaves and salt to taste. Add water and pressure cook for 3 - 4 whistles