system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do leftovers taste different than freshly cooked food?
gpt
Foods as they heat and cool change structurally and chemically. They continue to break down over time. Things that are higher in acidity more quickly. Sometimes this is a good thing, as flavors meld and sugars are released (its why spaghetti is always better the second day).