What's the difference between iced coffee and air-conditioned coffee? Is it troublesome to do at home?

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Cold extraction, this is a method of extraction. Cold-extracted coffee has an ancient history. It is first mixed with cold water and then soaked for a long time (about 20 hours). Then separate the coffee liquid from the coffee powder (or French pressure, flannel, etc., just separate the coffee liquid) and enjoy it. Because this kind of coffee is soaked for a long time, it has higher caffeine content, higher alcohol and can be preserved for a long time than ordinary thermal extraction. If you want, you can also heat up to drink, add a little pure milk, honey, I believe that in the hot summer is the first choice! Because it can be heated, winter is also a good drink.

Ice drop, first of all, this is a kind of instrument, invented in the Netherlands, so this kind of instrument is also called Dutch ice-brewed coffee maker. It was carried forward by Japan and now has a high popularity in Europe and the United States. The method of use is to store the ice-water mixture in the water bottle and ensure the droplet velocity by the droplet regulating valve, which should be 7 drops every 10 seconds. Put the right amount of finely ground coffee powder into the coffee powder cup and wait for the extraction to be completed slowly. This process is very long, usually takes hours, so it is also very expensive.

First of all, the extraction principle of cold-extracted coffee makes it more flavorful than traditional coffee, because the taste of coffee is not released instantly at high temperature, but slowly for 12 hours at low temperature. this makes the cold coffee stronger in flavor and softer in bitterness. Sometimes the bitterness of coffee is caused by the high temperature of the water, while cold coffee has nothing to worry about.