Why does the cold coffee change its taste? why does the cold coffee turn sour?

We all know good coffee should be drunk hot. But what does cold coffee taste like? Why does cold coffee turn sour? Don't worry, Fulaigao coffee experts will explain why.

Sometimes we have the experience of drinking a cup of coffee at a coffee shop or by ourselves. We love black coffee, so we don't add sugar or milk. But after a while, as the coffee cools, the originally mellow coffee will become sour and difficult to swallow. Why is that? Is there any way to avoid it? In fact, drinking coffee is like eating fish. Many times, a steaming fish is served fresh and delicious, but once it is cold, the fishy smell will become very heavy. Coffee sometimes has this phenomenon.

Coffee turns sour when it cools because coffee beans are a fruit, so they are rich in tannins, which are released when the coffee temperature drops, and when the temperature is lower, the human taste is more sour-this may also be the reason why dry white wine must be refrigerated-so we will obviously feel that the coffee after cooling has obviously turned sour. Of course, not all coffee will turn sour after cooling. Generally speaking, the lower the roasting degree of coffee, the more sour it is, and many darker roasted coffee will not have this problem. In addition, it is said that the better the quality of coffee beans, the smaller the flavor difference between hot and cold.

If you want to make coffee not sour, then the best way is of course to drink hot, if it is already cold, then you can try to add some milk or milk, can make sour become less obvious.