[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

There is also this episode of Begin Japanology where they talk about the history of rice cookers: https://youtu.be/I00uy0ssPP0