What Factors Affect The Flavor Of Coffee?
Freshly roasted coffee beans produce large amounts of carbon dioxide internally. At this time, the state of brewing and drinking can only be described as 'unstable' (because the water is combined with the coffee powder during brewing). It will release coffee substances from the water due to the violent gas in the coffee beans, resulting in a drop in coffee extraction)
It needs to stand for a while for 1-2 days to exhaust the excess gas and let the coffee flavor slowly stabilize before brewing. The shelf life of the coffee beans starts from the moment they are roasted. Generally speaking, after the roasted beans are ideally bagged, packaged, and sealed, they are not opened in a dry and cool environment. There will be a shelf life of about six months.
In the case of unopened coffee beans can have a shelf life of about half a year, but once they are opened and used and exposed to a large amount of air, the aroma will begin to dissipate quickly, and the flavor will continue to oxidize. At this time, it is recommended that you Don't put it in half a year. It's best to drink it within one month from the date of opening. If you buy ground coffee, the air contact area is much larger than that of coffee beans, and the rate of deterioration is faster. , It is not durable to store, drink as soon as possible (some coffee shops, because of the loss of coffee flavor, will refuse to help customers grind coffee beans and only sell coffee beans to customers who have grinders).
Three Killers Of Coffee Flavor Loss
Factors affecting coffee preservation include:
1. Air:
The coffee beans themselves contain oils, and the heavier the roasting degree, the more obvious the surface oil will be. Once these oils come into contact with air, they will oxidize, which will result in the odor of oil consumption. Therefore, when storing coffee beans, air must be avoided by all means. Sealed cans and vacuum cans are commonly used storage containers to isolate the outside air. (It is recommended that a light-tight sealed container is better)
The correct storage of coffee beans is a prerequisite for brewing perfect coffee, and only good coffee beans can make great coffee.
2. Temperature:
The sources of heat include the sun, lights, fire, etc. No matter which kind of heat, it will accelerate the volatilization of aroma and the oxidation of oils and make the quality of coffee deteriorate at a faster rate. This is why the coffee beans are quality is more prone to change. In order to avoid the deterioration of quality caused by high temperature, please be sure to choose a cool place that is not exposed to the sun, no one is exposed to direct sunlight and avoids fire sources such as gas stoves to store coffee beans. (It is recommended to use a styrofoam box/moisture-proof box and place it in a cool place)
3. Humidity:
The moisture content of roasted fresh coffee beans is very low. Because the moisture content of fresh beans is very low, if the surrounding environment is relatively humid, the coffee beans will become hygroscopic agents. Quality will be lost quickly.
How To Store Coffee Beans Correctly
Preserving coffee beans is actually not difficult at all. Just master the following principles:
1. After opening the coffee beans, be sure to store them in a sealed can or use a coffee bag with a one-way exhaust valve. Choose small packages when buying. Don't stock up on beans. Buy as much as you drink. It is recommended to buy only for two weeks.
2. Regardless of whether the beans are opened or not, please store them in a cool, dry, ventilated place without sunlight, light, and stable temperature and humidity.
3. Coffee beans are the same as other foods. No matter how well the storage conditions are controlled, brew them as soon as possible.
