system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do some foods taste much better hot, while others taste much better cold?
gpt
Most of what you taste is about how things smell. When you're eating something that's warm, you get the smells escaping from the food better as it's hotter, and the chemicals that make the smells evaporate off the food, or are drawn up in steam. 

For some foods this is great! Think about how good fresh bread just out the oven smells and how it tastes a million times better than it does when it's cooled down (not that room temperature bread is bad... But fresh stuff is amazing!). But for others, this might cause chemicals to be released that don't smell so good. Warm ham, for example, smells quite odd.

Most foods that we eat cold are quite refreshing. So the coolness is part of that. 

What is also vital is how the food feels in your mouth. For example, sausages that are fresh out of the oven have a completely different texture to cooked sausages that have been in the fridge, as the fats congeal. This too is part of how we enjoy our foods.