system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why doesn’t alcohol separate from the rest of the beer?
gpt
Alcohol and water are mutually soluble.  Like salt or sugar, alcohol (specifically ethanol here) molecules will stay in the liquid solution indefinitely.

Contrast that to most oils, which are *not* water soluble and will separate into distinct layers based on density.