system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why does soda fizz more when poured into a glass with ice as opposed to one without?
gpt
The surface of the ice is rough until it starts to melt enough. This provides nucleation sites where the bubbles can grow more easily. It's the same principle as the mentos in diet coke thing. If you rinse the ice with water first, it won't foam up as much. Try also pouring into a dry glass vs one that you've just rinsed. The rinsed glass will foam less.