Why does ice drop coffee have wine rhyme and smell? The reason why ice drop coffee smells like alcohol.

The taste of ice drop coffee is very special. In the words of guests who often drink ice drops in the store, it is the taste of wine in ice drop coffee. Some first-time coffee drinkers were surprised to ask Qianjie whether your ice drops were filled with wine, or did the coffee beans smell like alcohol?

In fact, neither, the "wine smell" in ice drop coffee comes from this unique production method. Ice drop coffee is the use of ice water drop by drop rate to infiltrate coffee powder, and then extract the coffee liquid. In the past, the street used to make iced coffee as an example. Qianjie used to use 60g coffee powder to extract 600ml coffee liquid (the coffee liquid produced will be relatively strong). The frequency of ice water drip is about 10.7 drops.

It takes 6-7 hours to finish the filtration. Therefore, the production time of ice drop coffee is one of the longest of all coffee making methods. Just because the iced coffee is filtered does not mean that the iced coffee is made. If you have tasted the iced coffee that has just been filtered, you will feel that the flavor is insufficient, the taste is slightly thin, and even an astringent feeling that hinders the mouth. Therefore, after the ice drop coffee is filtered, it is usually necessary to put the ice drop coffee liquid into a sealed bottle and put it into the refrigerator to ripen at low temperature (some people will call it "low temperature fermentation"). During the low-temperature ripening process, esters that provide fruit aroma for coffee are hydrolyzed into carboxylic acids and alcohols, which provide the aroma of wine fermentation.

Usually ice drops of coffee only need to be placed in the refrigerator for more than 8 hours, the taste of coffee will become smooth, mellow, permeated with wine, fermented aroma, taste like drinking. And the longer the iced coffee is kept, the stronger the "alcoholic smell" will be. For example, Qianjie uses Kenyan Asaria coffee beans to make ice drop coffee. After being ripe for 12 hours, its flavor shows strong fruit wine aroma, bright and clean tomato acid without losing calm, with a cold and mellow sense of fermentation.

In fact, it is not only ice-drop coffee that can make a "wine smell". If you make a cup of coffee and forget to drink it. If you smell this cup of coffee the next day, it will also give off a smell of fermented wine, as well as some rotten fruit and spoiled acid. Hot coffee will also ferment the aroma of alcoholic drinks over time, but the degree of fermentation is uncontrollable and is very easy to deteriorate. Therefore, the low temperature extraction of ice drop coffee can inhibit the reproduction rate of bacteria, while sealing and low temperature ripening is also to slow down the fermentation rate of coffee and inhibit the growth of bacteria. But even so, there is a risk of deterioration if the ice drop coffee is ripe for too long, and even if it does not go bad, the strong sense of fermentation will make the whole cup of ice drop coffee out of balance. For the sake of safety and flavor, Qianjie recommends that ice drop coffee be finished within 5 days.

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