How long can ice drop cold coffee be kept in the refrigerator? Cold coffee tastes better in the refrigerator for 12 hours?

Guide reading

Recently, more and more friends make ice-brewed coffee such as cold coffee and ice drop coffee at home. Ice drops of coffee prepared in front of the street are also in short supply. Many friends also asked, how long can ice-brewed coffee be kept in the refrigerator?

What's the secret of ice-brewed coffee extracted at low temperature?

Both cold-extracted coffee and ice-drop coffee are low-temperature extraction, and the contact temperature between water and coffee powder will be controlled between 0-7 ℃. The only difference is that cold-extracted coffee is in the form of low-temperature soaking, while ice-drop coffee is in the form of low-temperature dripping. The advantage of low-temperature extraction is that the principle of low-temperature extraction efficiency can reduce the release of macromolecular bitter substances, so the ice drop coffee we drink will be refreshing and rich in sour and sweet flavor.

After the ice drop coffee is finished, it will taste better if you put it in the refrigerator for 12 hours.

Ice drop coffee is usually done at room temperature (26-28 ℃) and takes about 6-8 hours to make, which is shorter than that of cold-extracted coffee. The temperature of the ice drop coffee just finished is about 15 ℃, and it has obvious layering effect (dark below, light above), this is because there will be more coffee substances extracted at the beginning, while less coffee substances will be extracted from the back water droplets, coupled with the low temperature of the coffee liquid, it is not easy to flow, so it is easy to layer with inconsistent concentration.

At this time, the taste of ice drop coffee will not be very rich, only retaining the mid-front flavor of the coffee bean itself. In the front street, the iced coffee is usually poured into a glass bottle with a sealing ring and placed in the refrigerator for 12 hours before drinking. In the process of pouring into the glass bottle, the coffee liquid with different concentrations can be mixed, while choosing a container with good sealing performance can ensure that it will not be contaminated by the outside world. the surface of the refrigerator looks clean, but in fact there are many microbes that are imperceptible to the naked eye.

Put in the refrigerator for 12 hours of low-temperature fermentation, will give the ice drop coffee aroma of fermentation, and the original flavor has become rich. Fermentation is very common in daily life, and uncontrolled fermentation will lead to food spoilage. The process can be effectively slowed down in a low-temperature environment, and Qianjie has also been proven that most of the ice-drop coffee made from coffee beans has the best flavor after being chilled for 12 hours.

How many days can I keep my iced coffee?

Many friends are very concerned about this problem. Coffee brewed in hot water usually loses its flavor after 1 hour, while coffee preserved at low temperature can be preserved longer. Ice drop coffee has the best flavor 12 hours after being chilled, and cold extraction coffee is the best to drink 4 hours after filtering dregs. The longer the coffee is placed, the stronger the fermented flavor of the coffee will be, finally masking the aroma of the coffee itself.

Qianjie also mentioned above that low temperature controlled fermentation only slows down the rate of fermentation, and with the passage of time, iced coffee will eventually spoil. Generally speaking, ice drop coffee is safer to store in the refrigerator for 5 days, and ice drop coffee more than 5 days is prone to deteriorate taste such as spoilage. As the cold-extracted coffee is made and stored at a low temperature, it can be stored in the refrigerator for 7 days.

Whether it is ice drops or cold coffee, Qianjie is recommended to drink it within 3 days. Although the ice drop coffee does not necessarily go bad or taste bad after 3 days, the taste period of the ice drop coffee made in Qianjie is set at 3 days for the sake of flavor experience and health and safety.