What happens to coffee when it cools down?
Chemistry For Your Life
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What's the Progression of Lactones in Coffee?
The acid acids aren't usually considered to be bitter. Acids are more considered to be sour. The lactone gives this nice bitter flavor that's like an enjoyable little bit. But then that can break down even further into something that is a bad bitter flavor. And why does it happen more with hot coffee than like cold brew coffee?
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