Double boiler, Bain Marie stye that sets over a pot on the stove with hooks on the edge to keep it in place. Put in chocolate, butter, caramel sauce, egg yolks, egg whites, cream . Place it on top of a pot of simmering water. The bowl hooks onto the edge of a pot with the handle setting on the other side of the pot. Sturdy and stable. You can whip contents by hand or with a hand mixer without fear of tipping over. Uses: melting and warming, and bain marie cooking. Melt chocolate, butter, milk, cream, egg yolks, and egg whites. Use to make Swiss meringue, Curd, Custard, Sabayon, Ganache