If you, like me, don’t want to sit through 11 minutes of a guy talking about a simple thing, here’s the explanation:
Turn it on, the heater goes on and heats rice and water to 100 degrees centigrade, which remains more or less stable as long there’s water left. Once all the water is soaked up by the rice or evaporated, temperature jumps up, and a thermal sensor detects this sudden change and puts the heater into warming mode.
Read this for more details: How Does a Rice Cooker work
