Remove the skin of blanched tomatoes. Then in a mixer jar add blanch tomatoes, ginger and garlic and make a smooth paste. Now add tomato paste and saute for more few minutes. Then add turmeric powder, coriander powder, red chilli powder, Kashmiri red chilli powder and salt, mix them very well. Saute all masalas on low flame till oil separates. Now add khoya and mix well.