Preparation time : 30 minutes Cooking time : 30 to 45 minutes Serves : 5 to 6Heat oil in a heavy bottom pan. Add garlic paste , onion paste and ginger paste. Stir and fry the masala for a while then add all the spice paste except garam masala paste. Add yogurt. Now fry the masala till oil comes out. Add mutton pieces fry with the masala. If the masala dries out add little warm water and fry the mutton in the masala well for at least 15 minutes. Then add 2 cups of water and pressure cook till the mutton is tender. Once done cook it for another few minutes so that the garvy dries up .Add ghee and garam masala paste . Mix well. Put off the flame let it sit for few minutes. Serve at room temperature with plain rice, loochi (Bengali style fried soft whole wheat bread) pulao , paratha, naan or any other Indian bread. It goes very well with mughlai paratha also do try and enjoy kosha mangsho in Bengali style.