left over cooked chicken
3 green chilies
1 medium onion
2 tablespoons vegetable oil
1 piece fresh ginger, skinned
2 garlic cloves
4 tablespoons water (for ginger or garlic paste)
1 tablespoon turmeric
1 tablespoon cumin
1 tablespoon coriander
1 (13 ounce) can coconut milk (if you prefer more sauce use 2)
2 teaspoons black mustard seeds
salt