A bain marie is an essential piece of equipment in hotels, restaurants, cafés, and catering services, especially for buffet and food service counters. It works by gently heating food using hot water or controlled electric heating, which helps retain moisture, flavor, and texture. Bain maries are commonly used to hold gravies, curries, soups, rice, and side dishes at serving temperature for long hours. Their stainless steel construction ensures hygiene, corrosion resistance, and easy maintenance. Available in multiple pan sizes and mobile or fixed models, bain maries improve service efficiency and help meet food safety standards in commercial kitchens.