Make a paste of the onion,ginger,garlic,cumin seeds with a little water in the food processor.

In a wok or a deep skillet heat the oil.

Add the onion paste and stir every few minutes until it starts changing color a bit and the raw smell disappears (about 5-6 minutes)

Add all the spices except garam masala and continue to stir for a minute or two until aromatic.If you find the paste sticking to the bottom add a tbsp of water and stir to mix.

Add the tomato puree and cook the mixture on low heat while stirriing at intervals until you see oil separating from the sides.

Add the chicken pieces and mix.

Add water, salt and garam masala.,Bring to a boil, cover and cook on med and then reduce the heat and continue cooking for about 8-10 minutes or until the chicken is tender.

Garnish with cilantro.

Serve hot with rice or roti.