Bain-Marie from Mauviel Copper

Copper bowls are the preferred vessel for whipping the egg whites used in meringues and zabagliones. Using a copper mixing bowl produces a creamier, yellowish foam that is more stable than the drier, white foam produced by whipping egg whites in a stainless steel or ceramic bowl.

Bain-Marie is the French term for "water bath" cooking, in which a container is placed in heated water to gently warm the food within. A bain-marie is similar to a double boiler, except the container in a bain-marie sits in the water itself, and the container is typically made of porcelain or ceramic rather than metal.

The bain-marie technique is traditionally used for preparing delicate items such as custards, milk-based sauces, mousses, and other foods that need to be gently warmed without scorching, burning, breaking, or curdling.

Bain-marie pans are often made of fine French copper, and Mauviel offers various sizes of bain-marie pans.