ELI5: Explain Like I'm 5

Double boiler

Okay kiddo, do you know what a pot is? It's something you can put on the stove to cook food. A double boiler is like a pot, but it's a little bit different because it actually has two parts.

The bottom part of the double boiler is a regular pot that you fill with water. The top part sits on top of the bottom part and is where you put the food you want to cook, like chocolate or egg yolks.

The reason the double boiler is so special is because it helps you cook things more gently. When you put your food in the top part of the double boiler, the steam from the water in the bottom part heats up the top part, but it doesn't get too hot. So your food cooks slowly and evenly without burning.

This is especially important when you're cooking things like chocolate or custard, which can easily burn if you heat them up too quickly. With a double boiler, you can melt or cook these things without worrying about them getting too hot too fast.

So now you know, a double boiler is just like a regular pot, but it has two parts and helps you cook things more gently. Cool, huh?
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