Meanwhile chopped and make puree of tomatoes. Now churn onion mixture and make a smooth paste.Add red chilli powder turmeric powder cumin corriender powder and tomato puree mix well. Add cashew nut paste. Saute properly. Beat curd and add, in greavy add pepper powder potatoes garam masala and dry roast kasuri methi. Saute for 2min. And cover cook on slow flame till oil release.