Chicken Vindaloo Goan style

Ingredients needed for the Recipe of Chicken Vindaloo
1 chicken, cut into small pieces, about a kilo
2 tomatoes, chopped fine
3 onions, chopped fine
8 cloves garlic minced
1 tsp ginger minced
1 tsp mustard seeds
1 tsp turmeric powder
1/4 cup oil
Salt to taste
1 1/2 tsp jeera powder
3 tsp vinegar
5 cloves
1 tsp saunf
2 cardamoms
2 pieces cinnamon

How to prepare the Chicken Vindaloo?
Grind 1/3 of the chopped onions, garlic, ginger, mustard, turmeric powder, jeera, vinegar, and the whole garam masala to a smooth paste.
Apply the paste to the chicken pieces and leave it in the refrigerator for 3/4  hours to marinate.
Heat oil in a fry pan, saute the remaining chopped onions, till they are golden. Add the chicken pieces with the masala along with half a cup of water.
Cover, simmer and cook till done.
Stir in between so that the chicken pieces are uniformly cooked and that the gravy does not stick.
Remove and garnish with chopped coriander leaves.