A double boiler is a tool that can really come in handy in the kitchen. It allows you to cook sauces or melt things at a very gentle heat, so that even the most delicate custard can be cooked without scorching or curdling. You can make a double boiler yourself out of existing pots and bowls that you already have, and this method works very well when you only need a double boiler every once in a while. If you find that you use one a lot to make sauces, clarify butter, melt chocolate, etc. you may find that you need something a little better.
The Nordic Ware Universal Double Boiler is an insert that does the job of a double boiler very well without requiring you to get a whole new piece of equipment for your kitchen. The insert is made of heavy duty aluminum and it has a nonstick finish inside. The base of the double boiler is rounded, making for easy stirring and quick mixing, while the sides are graduated with “steps” that allow it to fit over pots of various sizes. The insert is designed to work with pots that range in size from 2 to 4 quarts. The “steps” also prevent the bowl from tipping, turning or sliding around while you mix – a common problem with home-made double boilers – so you have a more stable setup to work with.