Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           yogurt
   5      teaspoons     garam masala powder
  10      tablespoons   mustard oil
 125      grams         ginger / garlic paste
  10      teaspoons     red chilly paste
   5      teaspoons     cumin powder
   5      teaspoons     coriander powder
   5      teaspoons     black salt
   4      pounds        cooked chicken tikka cubes
 200      grams         chopped onion
 200      grams         white butter
  50      grams         ginger paste
  50      grams         garlic paste
  10      grams         cumin powder
  10      grams         red chili paste
  10      grams         coriander powder
  10      grams         garam masala
 100      milliliters   tomato ketchup
 200      milliliters   tomato puree
  50      grams         cashew nut paste
 100      milliliters   fresh cream
   5      grams         dry fenugreek leaves

Preparation:

1. Marinate the chicken cubes in the in the mixture of the above ingredients up to and including the black salt, for at least for 6 to 8 hours (Important). Add Salt to taste 2. Grill this chicken cubes on skewers over a charcoal grill(must) in India we use tandoori oven for grilling. it gives the smoke flavor. 3. the chicken cubes must me not fully cooked, should be juicy. Chicken Tikka Masala 1. Sauté the onion in the white butter till it become light golden brown. 2. then add all the dry powder and mix it well ,add ginger garlic paste cook it for some time. 3. Add chili paste mix it thoroughly, then cashew nut paste , tomato puree and tomato ketchup. Cook over a small fire and keep stirring till it become a solid consistency. 4. Add chicken tikka cubes mix it well .then add garam masala powder and salt. Let it cook for some time ,keep stirring to avoid sticking at the bottom but gently. 5. Finally finish it with cream before removing from fire just add the crushed fenugreek leaves.