Recently, a friend asked Front Street: "Why do you have to close the air holes after grinding coffee beans into powder, so that the carbon dioxide in the package cannot be discharged?"
The meaning of vent holes on coffee packaging
Front Street will seal and package the coffee beans immediately after they are roasted and cooled, which can minimize the loss of flavor of the coffee beans. However, freshly roasted coffee beans will produce a large amount of carbon dioxide, which will continue to be released after the roasting is completed. If there is no place for the carbon dioxide to be discharged, it is easy to burst the package due to excessive internal air pressure.
This stomata is actually a one-way exhaust valve device, which can release carbon dioxide while blocking outside gas from slipping in through the stomata, reducing the oxidation rate of coffee beans. Since this device can release carbon dioxide, the coffee flavor can naturally escape through this vent.
Why do we need to seal the vent after grinding coffee powder?
Because it is necessary to preserve the coffee flavor~ When the coffee is still a whole bean, the release rate of carbon dioxide/flavor is very slow, but once it is ground, they both release themselves immediately, and the release rate is so fast! Therefore, after grinding the coffee powder, it is necessary to seal the package immediately and seal the pores that allow the flavor to escape.
Do I need to grow freshly roasted coffee beans after grinding them into coffee powder?
unnecessary! ! !
The purpose of raising beans is to allow the coffee beans to expel part of the carbon dioxide in the body. First, it takes away the dryness of freshly roasted coffee beans and makes the coffee flavor more round and full. Second, it reduces the impact of carbon dioxide on coffee extraction in subsequent brewing. If the coffee powder has been ground, there is no need to raise the beans, because during the transportation process, the pressure generated by the carbon dioxide in the packaging can also make the coffee flavor mellower, so you can make a cup of coffee immediately after receiving the coffee powder~
The shelf life and tasting period of fresh roasted coffee beans after grinding
Theoretically, the shelf life of freshly roasted coffee beans is one year, but since the aroma will gradually lose due to gas emissions, the tasting period is usually within 40 to 50 days. When the coffee beans are ground into powder, the aroma will weaken and the taste will dissipate faster. Based on the experience of Front Street, the tasting period of freshly roasted coffee beans after being ground into powder is within 20 days.
How to store freshly roasted coffee beans after grinding them into coffee powder?
/Place it in a cool, ventilated and dry place
Whether it is coffee beans/coffee powder, avoid placing it in a place exposed to direct sunlight, because high temperatures will speed up the release of coffee flavor, which will greatly reduce the coffee's appreciation period. At the same time, we need to pay attention to whether the storage location is humid. A humid environment will easily breed bacteria. Not only will the coffee smell moldy, but it will also affect human health.
/Completely sealed storage
Coffee beans can be stored in the original packaging and sealed, but coffee powder should be stored in completely sealed containers as much as possible. First, the oxidation rate of coffee powder is much faster than that of coffee beans; second, if the original packaging is not sealed at all, the flavor will escape, so it is more secure to store it in a completely sealed container.
The last little nagging
Although freshly ground coffee powder is convenient to use, Front Street still recommends grinding the coffee beans before brewing. It is also recommended that you drink one pack before buying the next one. After all, the freshness of the coffee beans/coffee powder is really important! !
You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.
The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.
FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.
FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473
