or double boiler. Means of cooking or heating in a container that does not have direct contact with the flame and is placed in another container filled with water that is heated to the desired temperature, without letting the smaller container rise above 100 degrees Celsius. Glues and some resins are usually dissolved in a Bain-marie with turpentine or other substances. The French term stems from bath (Bain) and Mary (Marie), the Hebrew alchemist and legendary sister of Moses.