when I am cooking curry, I add chopped tomatoes. I cook the tomatoes for 30+ minutes. In spite of this the tomatoes do not fully dissolve by the end of cooking. There are still whole pieces of tomato that have become cooked but still not become a paste. I have also added water and let the food to simmer, but the tomatoes do not dissolve.
How do I make sure that all tomatoes dissolve into paste when cooking curry?