A supremely decadent and rich Bengali mutton dish is the kosha mangsho. The term 'kosha' in the name refers to the process of cooking the mangsho, which means meat. The mutton dish boasts of traditional Bengali cooking ingredients like mustard oil, garam masala, and the quintessential boiled potato. Best served with hot luchis, this mutton dish is a sure shot show stealer. Here's a hassle-free and simple recipe to whip cook up some kosha mangsho this weekend.