Coffee common sense the difference between iced coffee and hot coffee with ice

There is an essential difference between ● iced coffee and chilled coffee.

There seems to be a word difference between ice drop (or ice brew) coffee and iced or iced coffee, but the two are essentially different in extraction and should not be confused.

Ice drop (also known as ice brew) coffee is a coffee beverage extracted by soaking in water below 5 degrees Celsius for a long time at a low temperature.

Iced coffee or iced coffee refers to a cold drink coffee that is quickly extracted with hot water and then added with ice or cooled rapidly.

There is a great difference between the two in the way and time of extraction.

1. Hot coffee is made with hot water above 80 degrees Celsius or 85 degrees Celsius Second, it must be extracted quickly, because too slow will cause excessive coffee extraction to cause miscellaneous smell, and the main substance causing miscellaneous smell is tannin, which will be decomposed into pyrosylic acid after boiling, while tannic acid can be easily dissolved and decomposed in hot water. It is the main culprit that causes our coffee to be too bitter, and we generally have to be careful not to extract too much tannin and caffeine. This is the basic common sense that our coffee lovers who have been around for a while know.

2. Ice drop coffee is extracted with a temperature that must be lower than 5 degrees or even close to the freezing point, so the various ingredients contained in the coffee are not easy to extract in ice water, so it is necessary to take the way of fine grinding and slow extraction. the specific method is to soak the coffee powder in ice water for a long time and extract it at a very slow drip rate. The general standard speed is 1 drop per second, 45-50 drops per minute. It usually takes about 8-12 hours. Although it takes a long time to wait, its biggest advantage is that the tannic acid we hate most does not decompose at all in cold ice water, and caffeine decomposes a little in ice water, but it is about 90% less than hot water extraction. there are also many other major ingredients in coffee. It is precisely because there is no astringency in the iced coffee and there is little bitterness in the coffee, so the ice-brewed coffee appears to be very pure in taste, which is also a compensation for a long wait.

Through the comparison of the two kinds of analysis, you can see that the fundamental difference between hot coffee and ice drop coffee lies in the difference in extraction temperature and the content of the substance in the coffee, rather than in the cold drink or hot drink in the end, hot coffee can certainly be cold drink after ice, and ice drop (or ice brew) coffee can also be heated after heating (experts suggest that it is better to heat it through water to avoid causing foul smell by direct heating).

This is why when you want to order a real Dutch ice drop coffee in a coffee shop or hotel, you not only need to book at least one day in advance, but also its price will be much higher than that of ordinary hot coffee. "who knows the liquid in the cup. Didi is hard", this is also worth us to pay a little more money.

How does ● distinguish between iced coffee and chilled coffee

It is precisely because of this that I often find that baristas in some bad coffee shops or hotels add hot coffee to ice cubes to cool down, pretending to be authentic ice-drop coffee to deceive consumers to make high profits.

In fact, the difference between them is easy to distinguish, there are two ways:

First, after at least dozens of hours of full dripping and fermentation, the real ice drop coffee will have an unspeakable and strange aroma immediately after opening the bottle, which is the kind of aroma that hot coffee absolutely does not have, and this aroma cannot be copied in any other way. Unforgettable. So when you doubt whether it is a real ice drop coffee, ask the barista to bring up the original ice drop coffee without sugar and milk and smell it first.

Second, the taste and feeling, ice drop coffee does not have any astringency, very little caffeine content, taste very clean and refreshing, that is, even drinking a few cups will not have any palpitations or insomnia and other negative effects. Hot coffee with ice only lowers the temperature, but caffeine and tannin are not reduced, and there will be a significant difference in taste and feeling after drinking.