COLD BREW coffee also means cold coffee in English. How to distinguish cold coffee with nitrogen?

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Cold extract, ice brew, ice drop, Japanese iced coffee, do you understand?

Although the extraction speed is slow at low temperature, in terms of flavor, because the tannic acid in coffee is easier to decompose into pyroacetic acid at high temperature, it produces sour and bitter taste. The coffee extracted at low temperature has a more mellow flavor and is popular. Common cold brewed coffee, iced American coffee, iced drop coffee, etc., although they are low-temperature products, but the process and flavor are very different.

Cold Brew Coffee

The concept of cold coffee is similar to cold tea. The extraction process starts with grinding coffee beans, pouring cold water, soaking in a cold environment for at least 12 hours, and finally filtering the coffee beans before drinking.

This cold bubble method will amplify the various flavors and aromas of coffee, reduce acidity, and make the flavor cleaner and purer. The characteristics are that the more ice you drink, the better the flavor. It is very good without diluting and adding ice cubes. The United States is more popular to add coconut water in equal proportions. It can drink a purer coffee sweet taste. Each unique formula has its own flavor.

NITRO COLD BREW

Cold extraction coffee injected with nitrogen will produce dense bubbles, so that nitrogen ice coffee at first glance very beer feeling, so nitrogen coffee also has the title of "beer coffee". The bubbles not only smooth the texture of the coffee, but also feel like cream has been added. Many drinkers feel that it is more mellow than the original cold coffee. Even without added sugar, it has a natural sweetness. The innovation of process and brewing makes the iced coffee have a new look.

Ice Drip Coffee

Ice drops are the use of ice water mixture below 5 degrees C, let the ice naturally melt, through the valve to control the speed of ice water dripping into the coffee powder, ice drops slowly dissolve the coffee flavor in the coffee powder, little by little drip out of the extract, complete extraction time about 2- 8 hours. For better taste, a refrigerated fermentation time of 12- 48 hours is required. The amount of each extraction is very small (usually 30--60 ml), and the concentration is usually very high without ice. If the coffee is too strong, it will be diluted with ice according to personal taste. Because the process is slow, iced coffee is more expensive, but it tastes good.

American barista champion Laila once said in an interview that iced coffee has more aroma and a finer and more subtle taste than cold coffee.

Ice Americano

Iced American coffee is extracted by Italian coffee machine at high temperature. Finally, the coffee liquid is poured on ice and added with ice water according to personal preference. The flavor is similar to that of ordinary high temperature extracted coffee. Ice and ice water only have cooling and diluting effects.

Japanese style cold coffee

Japanese iced coffee is not iced coffee, but some people say it tastes even better than iced coffee because they believe that some specific odor molecules need to be heated to extract them. The method is to directly cool the extract of hand-brewed coffee by putting ice cubes under the filter cup of hand-brewed coffee. If you want to save time, it is also an option.

The taste of coffee extracted at low temperature will change according to factors such as coffee roasting degree, water volume, water temperature, water droplet speed, coffee grinding thickness, etc. The perfect ratio needs to be adjusted by time and experience. Low temperature extraction coffee taste mellow, low acidity, mild bitterness, fermentation also added layers, but at the same time it is easier to lose the special flavor that has been released at high temperature, so the selection of bean varieties and roasting degree also needs special consideration.

If you want to try making your own cold brew coffee at home, Jan and Niclas of the "Cold brew" brothers teach you four simple steps: "First of all, don't believe the nonsense that coffee beans are 'the coarser the better'. The suggestion is to make the thickness of the bread crumbs about the same, and adjust it from time to time according to the length of extraction time; Second, ice brewing takes about 12--24 hours, 18 hours best to drink, if it is ice drop coffee, the extraction time is shorter, about 1 second to control the speed of 1 drop of coffee can be; three, do not need to use 0 degrees C ice water, about 20 degrees C filtered water can be; four, if it is cold brewed coffee, then only the last step: filter the coffee grounds. Drink!"

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