Chicken Kosha is a traditional Bengali delicacy known for its deep, spicy, and flavorful taste. “Kosha” refers to slow-cooking, which enhances the richness of the dish. The chicken is marinated with yogurt and spices, then cooked with caramelized onions, tomatoes, ginger, garlic, and whole spices like bay leaves, cardamom, and cinnamon. The slow-cooking process allows the flavors to develop, resulting in a thick, glossy gravy. A hint of mustard oil gives it an authentic Bengali touch. It is best enjoyed with Bengali luchis (fried bread) or steamed basmati rice, making it a beloved dish for special occasions and family gatherings.