Definition & Meaning of "double saucepan"

What is a "double saucepan"?

A double saucepan, also known as a double boiler or bain-marie, is a kitchen tool consisting of two nested pans designed to heat foods gently and evenly. The bottom pan holds water, while the top pan rests securely on top, allowing the steam from the simmering water below to heat the contents of the upper pan indirectly. Double saucepans are commonly used for tasks such as melting chocolate, making custards or delicate sauces, and preparing foods that require gentle heating without direct contact with the heat source. They help prevent scorching or burning and ensure that the ingredients are heated evenly and maintain their desired texture.