Add salt, 1 tbsp ginger garlic paste, 1 tbsp red chili, 1 tsp white cumin in yogurt and mix it. Marinate the chicken in this mixture for an hour.
Clean the bitter gourd and cut it into small pieces.
Add in 1 tsp turmeric and 1 tbsp salt in it and keep it for an hour in the sun.
Take ½ cup oil in the pan and heat it for 2-3 minutes. Fry the chopped onion till it is golden brown. Then take it out.
Add in the marinated chicken in the oil and add in the onion. cover the pan and cook it on the low flame.
When the chicken is cooked add in the bitter gourd along with tomatoes and cover the pan.
When the tomatoes are cooked add in green coriander. Cook it on a low flame for 5 minutes and serve.