Cold-extracted coffee is made by soaking ground coffee beans in cold water for at least 12 hours, and extracting and filtering by professional instruments. If the mellow degree is higher, the time can also be extended to 24-48 hours. Drinking cold-extracted coffee will not be unhealthy. Because cold-pressed coffee does not add anything else, it tastes pure and is suitable for most people to drink. Be careful not to exceed 400 milligrams of caffeine.

Cold extracted coffee is made by cold water extraction. Compared with ordinary coffee, it tastes a little different.

Low temperature and long extraction time are the two characteristics of cold extracted coffee, and they are also the two main differences that make cold extracted coffee and hot extracted coffee have different tastes. Hot extraction coffee beans are extracted by hot water at 82-95℃, which usually takes less than 5 minutes. The fastest espresso is only 18-23 seconds, while the time of cold extraction of coffee is far longer than that of hot extraction of coffee.

About caffeine

There is no obvious difference in caffeine content between cold extraction and hot extraction, and the daily coffee intake of adults should not exceed 4 cups.

Because caffeine and other substances contained in coffee can stimulate the human central nervous system, adults should control their daily coffee intake. Generally speaking, it is best to control the daily coffee intake of adults at 400mg, about 4 cups, but it is not recommended for pregnant women and children. If you must drink, don't exceed 200mg of coffee a day, that is, 2 cups.

Extended data:

Matters needing attention

1, grinding thickness.

The iced coffee powder should be ground a little thicker than the autoclave, and the thickness of the powder should be ground to the size of bread crumbs.

Of course, you can also adjust it according to your own preferences. In this regard, we also have a small suggestion: adjust the extraction time according to the thickness of our own grinding.

2. Extraction time.

As mentioned above, the extraction time depends on the grinding thickness of your coffee powder. Usually, the finer the grinding, the shorter the extraction time, the coarser the grinding and the longer the extraction time, just like extracting with hot water.

Ice extraction usually takes 12-24 hours, and we find that 18 hours is the best in most cases.

3. water.

Use ice cubes or water close to 0℃ and put it in a refrigerator at 0-5℃ for cold storage. Also, in order to make coffee taste better and more consistent, try to use filtered water.

References:

People's Network-Comments on Pure Italian Taste and Latte Nutrition to Improve Coffee Health