Put some oil or butter in pan and roast ginger+garlic+cumin seeds+cashews+cardamom+cloves+red hot pepper+fennel seeds

Roast for atleast 3 to 4 minute at low flame

Now add diced onion and roast until brown green chilli with tomato too separately

Add some butter or oil again in pan and add blended onion mixture

Now add all the spices and mix

Now add blended tomatoes and now stir it for atleast 15 minute

This is only curry or gravy you can preserve it and make any gravy veggie

Now blend it and blend