Origin of double boiler
Examples from the Web for double boiler
Put one quart of milk in the double-boiler, and place on the fire.
Reserve one gill of milk from a quart, and put the remainder on the fire in a double-boiler.
Put back in double-boiler and allow it to cook one or two minutes (stirring constantly), just enough to slightly thicken the eggs.
Put the remainder of the milk on to heat in the double-boiler.
When mixture in double-boiler has cooked sufficiently, strain it over the mixture in the bowl.