rahul's mom's chicken curry (have not yet tried)

1 1/2 lbs. chicken cut into small pieces
2 onions (medium), chopped
1 tsp. ginger and garlic paste
1 4 oz. tomato paste [I think this probably means "1 4 oz. can"]
1 tsp. garam masala powder
1 tsp. chili powder
2 tbsp. sour cream (optional)

Chop onions into small pieces. Fry them in 2 tbsp. oil (vegetable or canola) till brown. Add ginger garlic paste. Fry some more on medium heat. Add tomato paste and fry 5 more minutes on low flame. Add chili powder and garam masala powder. Fry 2 more minutes. Add cleaned chicken and cook on low heat, covered. Check every 5 minutes and stir well. Cook till chicken is tender--about 1/2 hr. Don't add too much water; you can add a little (1/4 c.) water if needed when cooking. Usually chicken contains little water. That should be enough. Add salt according to taste with the chicken. After the chicken is cooked, add sour cream. Garnish with cilantro if you like.