system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When coffee gets cold in a french press, it still tastes great. When coffee from a coffee machine gets cold, it tastes disgusting. Why is this?

RE-posting in an attempt to make it abide by the rules.

I understand why cold brew coffee tastes different, but since the coffee is hot-brewed in both the press and the machine, why are the two so drastically different when cooled to room temp?
gpt
Hey! Former barista checking in.

It has to do with the oils.

Oils are used to roast the beans. By using a French press you use a brewing method called "full immersion."

Drip coffee is well, drip coffee.

Coffee from a French Press is noticeably slicker than coffee from drip. These oils contains higher levels of coffee flavor and aroma that continue to develop as it brews.

It tastes better in your cup at room temperature because the aromas generated by the oil are sticking around long enough for you to smell them.

When the coffee is hot, the steam carries away those aromas and it's hard to taste anything other than coffee and hot.

As it cools the beans show off their true nature.

With bad coffee it tastes like pennies, stale potatoes, and a mangy cat.

Fresh coffee will still have those oils and reflect the roasting technique, soul chemistry, species, and drying methodology.

Tl:dr - French presses are dope and a bitch to clean. Check out an AeroPress. Just as tasty, 5/6 of the hassle.