system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - Why does putting the top on a pot of boiling pasta make it frothy and boil over?
gpt
The starch released into the cooking water stabilizes the froth that you get if you boil it too vigorously. Putting the lid on keeps more heat in so effectively it's like turning up the electricity or gas too high.