Good coffee beans determine the taste, safety, and quality of the coffee. No matter you purchase coffee from a local or exotic country. And the storage of the coffee bean is essential to the quality of the coffee because it should stay a long time in the storage facilities before sales.
For coffee beans to be grown and picked in many parts of the world, growers can harvest only once a year. When growers remove the pulp from picked berries, they dry them by sun or machine. Then according to the size of coffee beans for screening into gunny bags, the sack may not have a moisture barrier.
After simple packaging, growers ship the unroasted coffee to suppliers who store the beans without the need for production and processing. To avoid mold growth during storage, the temperature and humidity of the storage environment must be controlled when storing coffee beans.
Generally, green coffee beans taste best when roasted and dried to a moisture content of 12%. But pay attention to the condition of storage facilities. If the storage equipment is too dry, the beans lose their moisture. Conversely, if the storage device is too wet, the beans will add moisture. Both affect the taste of the coffee.
The country of origin of coffee beans has a significant impact on what a company buys. Because coffee beans can become mildewed, ferment and turn dark when stored in a humid environment for a long time. In addition, if the coffee beans are not in a ventilated or climate-controlled container during transportation, the longer they are transported, the more condensation will occur, leading to fluctuations in weight, increased moisture, and decreased acidity of the coffee beans. So a roaster on the West Coast of the United States would prefer Latin American coffee to Indonesian coffee for shorter shipping times and relatively manageable weather conditions.
Temperature and humidity fluctuations can cause coffee beans to condense and ferment. And wet coffee beans are more likely to develop mold if they are not dried or roasted within a few hours. The best place to store coffee beans should have stable ventilation and insulation.
Hot and humid conditions are not conducive to coffee bean storage. Similarly, coffee beans are not suitable for cold storage. Experts differ on the temperature at which coffee beans should be stored. Some say the temperature should be below 40 degrees Fahrenheit, while others say it should be between 50 and 70 degrees Fahrenheit. But relative humidity is generally recommended to be between 50 and 70 percent. And reasonable moisture control keeps the beans moist and flavorful throughout the year.
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