system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does water stop boiling when you lower the heat source (but is still more than the boiling temperature)?

I have observed this while cooking, but if you boil something at high flame and then turn the flame low, the liquid stops boiling. E.g. Water boils at 100C. On high gas, it starts boiling. That means the water temp is now 100C. Then if I lower the flame, the water stops boiling even though the flame temperature is greater than 100C at all times. At high flame, the water has reached 100C, so if I lower the flame the water temp should still remain 100C.
gpt
As you apply more heat to 100C water, the temperature of the water actually does not increase beyond 100C. The excess energy is released as steam.

This also explains why removing the heat source causes the water to stop boiling nearly immediately - there is no more energy being added, so no more energy needs to come out.