Do you know the correct way to store coffee beans after purchasing them? Beans, which should have been delicious at first, lose their flavor if stored incorrectly.
Coffee is a living material that keeps changing, opening a packet of coffee; it turns, loses its aromas, and oxidizes.
Coffee is a natural product and has a specific shelf life. It is not a perishable product, which means that the expiry date is not as hard as with perishable food; the quality and nutritional value of the coffee can only be less guaranteed. It is, therefore, essential to store coffee correctly. Here are some points on how to keep coffee fresh for longer.
Things to avoid to keep coffee fresh
If the beans come into contact with the oxygen contained in the air, the coffee beans will be oxidized. If coffee beans are oxidized, the bitterness and flavor will be reduced, and the original taste will be lost.
The loss of taste of coffee by oxygen is a 2-way process. Coffee emits CO2 and also absorbs oxygen (O2) from the ambient air, after the roasting process, this process is called degassing and can take place up to 1 week after roasting the coffee.
Coffee beans are also affected by UV light and degrade. Since it has the property of being weak against the light from the sun and electric lights, it is necessary to store it in a light-shielding container.
The higher the temperature, the faster the oxidation speed. Special attention is required in summer when the heat is high. Coffee can lose aromas due to heat. Of course, the aromas are lost over time anyway, but a warm temperature accelerates that process.
Humidity and Moisture
Contact with water will cause the quality of the beans to drop and cause an unpleasant taste. Be careful as humid places can cause mold. When roasting the coffee beans, it becomes very fragile and can be easily affected by humidity.
Storage of coffee
The first significant step to store coffee is to determine the time of purchase. It is vital to choose pack sizes that are suitable for your consumption. In this sense, oversized parcels should be avoided, preferring smaller packages of 250 grams or less instead.
A large container, inevitably, will remain open for longer, favoring the undesired loss of aromas. Following this principle, it is essential to buy a product that is not too old. For the same reason, coffee should be consumed quickly, possibly within two to three weeks of opening the package.
Grinding of coffee
Only freshly ground coffee can develop its full aroma. Therefore, it is best to grind the beans immediately before preparation and pay attention to the correct degree of grinding for your chosen method of preparation.
A technique called hand drip that uses a paper filter or dripper that is easy to start "house brew" is a standard drip method that is easy to start even for coffee beginners, yet profound. When brewing coffee, move it to the refrigerator in advance and let it thaw naturally. Since unroasted coffee beans are not processed, they can be store for a more extended period.
Dry storage area
The airtight container needs to be stored in a closed cupboard and away from heat, such as radiators, ovens, and refrigerator motors. The storage cabinet must not be illuminated directly by sunlight. The ideal temperature for storing coffee well is between 15 and 25 degrees Celsius, with an air humidity close to 50%. These values must remain stable as far as possible.
If coffee is not drunk immediately, a recommendation to keep it frozen. Still, the freezer has a significant temperature difference between inside and outside, so it is easy for water to fall. Coffee beans can be stored in the freezer, but once thawed, it is better not to refreeze them. Therefore, keep smaller portions in separate airtight bags, so you can safely leave the rest.
When storing coffee, it is either in the state of "beans" or ground to "powder," but under the same storage conditions, the state of "beans" can maintain freshness more. Once coffee comes into contact with the surface area, the air is larger than the beans, which means that the oxidation speed is faster.
After opening the fresh coffee stored in a container, make sure it's drunk in 7 to 10 days if in a powdered state, and about 30 days in the case of beans.
Make sure the container that holds the beans is clean. After some time, coffee oil is deposited and stick to the box, and it is vital to check and store them in a clean environment.
Both coffee beans and ground coffee must be kept in an airtight container, which does not allow air and light to penetrate. The container must not be too large compared to the quantity contained to prevent it from filling up with an excessive volume of air.
The box should always be washed after emptying and before filling it with coffee from the new package. To protect the freshness that is linked directly to the deliciousness of coffee, it is crucial to stick to "sealing" and "shading." If it is a sealed container, it will prevent the smell of other foods from being transferred even when stored in the refrigerator.
There are containers of various materials and shapes, such as pottery, glass, cans, etc. Considering the tightness, always check if there are lids or rubber packing. Finding the design of a storage container that we like will make coffee time more fun.
Types of Storage Container
Foil bags with a ziplock and valve, in which grains are purchased, are best suited for storage. Such packets cannot transfer any odors to coffee. They do not allow air to pass through and. The package can be twisted, removing excess air from it, and thereby minimize the oxidation processes of essential oils inside grains.
Plastic and metal containers
Plastic and tin containers are the least preferred option. It's believed that they could transmit an undesirable aftertaste to coffee.
Slightly less preferred, but the acceptable option is ceramic and glass jars. Such cans for storing coffee should have a tight-fitting lid with a silicone gasket to prevent air from entering. They also do not transmit coffee odors and protect the beans from moisture. If a glass jar is used, it is essential that it is either opaque or kept permanently in a dark place.