[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

Question

[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

In: 825

Answer 1

This is super interesting. The rice cooker boils the water. When water is boiled it doesn’t change temperature. It holds temp while it’s transitioning into steam. It’s only once all the water is boiled off that the temperature starts to increase.

So all the rice cooker has to do is wait for the temperature to increase before shutting off.