Bain-marie is a water bath used to heat or cook food gently and evenly. In a kitchen, the term can refer to a pan of hot water holding a smaller container, a water bath used in the oven, or a hot-water well used to hold sauces and other preparations for service.
A smaller vessel containing the food is placed in a larger pan of hot water. The water moderates the heat reaching the food, reducing the risk of direct overheating. This method is useful for delicate custards, cheesecakes, terrines and other preparations that benefit from gentle, even cooking.
Commercial kitchens also use bain-marie wells with inserts to hold sauces, soups and other foods during service. The equipment must maintain the food at the required safe holding temperature; a warm water bath alone does not guarantee safe holding.
Chef’s tip: Use hot water at the start of an oven water bath when the recipe calls for it, and avoid splashing water into the preparation. For service holding, monitor the food itself with a thermometer and follow the applicable hot-holding requirements.
Key distinction: A bain-marie is a gentle water-bath heating method; it is not the same as direct boiling or steaming.
This term is one of hundreds covered in depth across OCS courses, learning paths, and 1-on-1 coaching with Chef Eric.