Which flavor is better, ice drop coffee or cold coffee? What's the difference between the degree of grinding powder and the taste?

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As the classic representative of low temperature extraction coffee, there is nothing more than ice drop coffee and cold extract coffee. Different from iced American coffee / hand-brewed coffee, which need to be extracted with high-temperature hot water and cooled with ice, ice droplets and cold extracted coffee are extracted with low-temperature water in the city, so the extraction time is also very long.

What is low temperature extracted coffee?

The movement of hot molecules in hot water accelerates the release of heavy molecules (bitter) substances in coffee, while cold water is just the opposite. Using cold water / ice water / low temperature to extract coffee, the bitterness is not easy to release, but other quality flavor molecules will also be released more slowly.

Therefore, low-temperature extracted coffee usually takes 6-12 hours, so that the pleasant flavor substances can be better released and dissolved in water, making the coffee show a more full and fragrant taste.

Grindability of ice drop coffee and cold extract coffee

It is common for Qianjie Coffee to make coffee extracted at low temperature, using medium to medium roasted beans, so the beans will be ground to medium thickness (such as granulated sugar / 75% of China 20 standard sieve).

In the case of too fine, the low water on the ice drop coffee can not evenly and fully pass through the whole coffee powder layer; after cold-extracted coffee is added with water, the coffee powder is easy to clump together. All these are the reasons for the uneven extraction and unbalanced taste of coffee.

The difference between ice drop coffee and cold extract coffee

Ice drop coffee belongs to trickle extraction. Is the use of ice-water mixture below 5 ℃, let the ice naturally melt through the valve to control the speed of ice water dripping into the coffee powder, ice water slowly dissolve the flavor of coffee in the coffee powder, a little bit to leak out the extract, the complete extraction time is about 2 to 8 hours.

In order to get a better taste, it takes 12 to 48 hours of cold storage and fermentation time. The proportion of each extraction is low, (Qianjie coffee will be extracted with the powder-liquid ratio of 1:10, that is, 60g coffee powder to extract 600ml coffee), the concentration is usually very high without ice, and if the coffee is too strong, it will be diluted with ice according to your taste. It tastes great.

Cold-extracted coffee belongs to soaking is extraction. Is to mix the normal temperature water / ice water directly with the coffee powder, then seal it in the freezer and start the extraction process for up to 8-12 hours. Different from ice-drop coffee, cold-extracted coffee is fully extracted because it is in direct contact with powder and water. After extraction and filtration, it can be drunk directly.

Qianjie Coffee makes cold-extracted coffee, usually using the powder-water ratio of 1:13, that is, 30g coffee powder is extracted with 390g cold water / ice water, and the final concentration of coffee liquid is just right for most friends. If you want to be thicker, you can reduce the ratio of powder to water, and if you want to lighten it, you can dilute the right amount of water after the extraction is completed.

The difference between the flavor and taste of ice drops and cold extract of the same coffee bean.

In this article, Qianjie Coffee will use its own freshly roasted coffee beans for comparative experiments. Only freshly roasted coffee beans will have a fuller aroma and flavor, so all coffee beans sold in Qianjie Coffee are issued within 5 days after baking.

This time Qianjie chose a medium-to-light roasted "Ethiopian Yega Snow Sun Red Cherry Coffee beans". This coffee bean uses 100% fully ripe coffee fruit, so the coffee itself is very sweet. Coupled with the direct drying of the sun treatment, the sugar is further transformed into the coffee beans, accompanied by a slight sense of fruit fermentation.

The taste of iced coffee made by drip filtration will show citrus-like acidity, strawberry-like sour and black tea-like taste, refreshing, clean and thorough taste. The longer the storage time, the more obvious the fermented feeling of fruit wine will be.

Cold extracted coffee is made by soaking, the flavor will show citrus-like acidity, mixed berry juice sour sweet and full, and black tea-like sweet, full-bodied, full-bodied and clean