system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why does cheese taste so different when it’s melted?
gpt
Cheese has a lot of fat in it.  Fat in its solid form doesn't have much aroma and you only taste what touches your tongue.  But when fat is heated, it releases oils and other aromatic compounds that blend with your food and reaches more taste buds.  Also, your sense of smell is more sensitive when things are hot and moist, melted cheese is both of those things.