How long can Ice-Drip Coffee last? The difference between ice drop coffee and cold extraction. What are the proportion parameters of the production method of ice drop coffee

It is well known that ice drop coffee is extracted by drip filtration with water droplets, so it takes several hours to make a pot of ice drops.

Interestingly, every time the ice drops are filtered and taken out in front of the street to be refrigerated, this picture is always captured by a sharp-eyed guest or friend. Looking at the "freshly harvested" ice drops of coffee in front of the street, friends who have high requirements for the freshness of ingredients since childhood will always pop out: "have a cup!"

But often, such a request will always receive an answer rejected by Qianjie! Why? Because you can't drink the freshly made iced coffee right away.

Why can't you drink the ice drops that have just been made? It's not that you can't drink it, it's too extreme, it should be said that it is not recommended to drink right away! Anyone who has tried to drink it immediately after the ice drop has been made should know that the freshly made ice drop coffee is not good. It tastes dull and tastes thin, it tastes like an ordinary cup of coffee, even because the temperature tends to normal temperature, it is inferior to most of the coffee extracted by conventional methods. Therefore, generally speaking, no merchant will directly sell the ice droplets that have just been made. Instead, you put the coffee in the refrigerator and refrigerate it for eight hours or one night before you start selling it! At this time, when we go to enjoy it, we will be able to feel a new ice drop coffee, not only more prominent taste, better taste, but also with obvious wine aroma.

That's the problem again! Why is there such a phenomenon?

Why does the iced coffee change so much after being refrigerated? Because during the placement, the ice drop coffee has been "ripe"! Somewhat similar to the wet ripening of meat, when the ice droplets are made, the coffee itself will continue to ferment. If we put the ice droplets in the refrigerator at this time, the microbes will slow down the fermentation because they are in a low temperature environment, so as to make the fermentation controllable.

After about 8 hours, the texture of the iced coffee will be improved by the increase in the degree of fermentation. The taste is no longer muddy, and it becomes clean, mellow, silky and rich in flavor. at the same time, fermentation also brings a different flavor of wine, which is the "icy taste" that people spread by word of mouth. So we all know why the blackboard on the front street indicates that the ice droplets need to be booked two days in advance, because it takes a long time to make the drip filter, and it takes a long time to put it into maturity, which only takes two days to prepare. (but this is so that guests can choose the beans they want to make. Generally, stores have ice droplets, but beans depend on mood.)

But as mentioned in the front street, the fermentation process has already begun from the moment the ice droplets are made, and it is a process that will not end. The longer the ice droplets are placed, the stronger the fermentation will be, and the stronger the fermentation flavor we can drink. However, the stronger the taste, the better it tastes. Most of the time, we will feel that something smells good and tastes good, because its aroma concentration is just right. Once the concentration is too high, it may turn into a taste that we hate. Not only that, when it is stored too long and fermented too much, the coffee will go bad and produce some bad taste. At this point, we need to give it up and throw it away to avoid affecting our health after drinking it. And the specific situation we need to make a decision according to the ambient temperature of the ice drop coffee.

If the ice drop coffee is in the normal temperature environment, then only 6 hours, it can develop to the situation of deterioration. If it is sealed and refrigerated in the refrigerator, it can be kept for 3 to 5 days, because the sealed and low temperature environment can avoid the infection of external bacteria and inhibit the reproduction rate of colonies. Greatly extend the storage time (without opening the bottle cap frequently). Therefore, ice drop coffee also has a drinking period, we need to make corresponding adjustments according to the specific storage situation. Although it is a safe time for ice drop coffee to be stored in the refrigerator for five days (it is easy to deteriorate after five days), the fermentation concentration of the coffee will increase significantly after more than three days of storage. many friends do not like the strong aroma of wine. Therefore, for the sake of flavor experience and health and safety, the ice drop coffee made in Qianjie usually has a taste period of 3 days, which will be poured out or digested by itself after three days.

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