The surface area of ground coffee beans will increase by about 1,000 times, making it easier to extract the active ingredients in coffee beans, so that a cup of fragrant and mellow coffee can be made in a short time.
Regarding the grinding time, it is aptly called “dissipated in seconds”, and the fragrance will be dissipated within 30 seconds to 3 minutes. Therefore, the ideal time to grind coffee is before brewing. Moreover, without proper storage, coffee powder is easy to stale, so it must be consumed within 2 weeks.
Proper grinding of coffee powder is very important to make a good cup of coffee. In general, the shorter the cooking time, the finer the ground powder; the longer the cooking time, the coarser the ground powder.
The grinding degree of coffee beans is roughly divided into the following categories:
① Coarse: The ground coffee particles are similar to coarse sugar.
② Medium: The particles are the same size as granulated sugar mixed with coarse white sugar.
③ Fine: The ground coffee is close to powder, and the thickness is similar to that of powdered sugar.
In terms of the taste of coffee, when the ratio of powder to water, water temperature, water injection method, and extraction time remain unchanged, the finer the grinding degree, the higher the concentration and extraction rate of the coffee, the higher the mellowness, and the higher the bitterness. powerful. Conversely, the coarser the grind, the lower the concentration and extraction rate of the coffee, the lower the body, and the stronger the acidity of the coffee.
That is to say, if the coffee tastes a bit sour, the finish is insufficient, and the taste is thin, it is a typical underextraction. At this time, the coffee should be ground finely and the surface area of the coffee should be increased to improve the extraction rate. If the taste is bitter, the finish is too long, and the taste is thick, it is a typical overextraction. At this time, the coffee should be ground coarsely to reduce the surface area of the coffee to avoid the extraction of bitter substances.
Choose New Saier bean to cup coffee vending machine has a built-in professional grinding device, with a powerful brewer, and at the same time, it can realize the working state of making coffee quietly.
Simple and intuitive operation: all you have to do is scroll through the numerous options and select the desired specialty coffee on the touchscreen.
Large coffee bean storage capacity: The bean hopper can hold 1.5kg of coffee beans, which is removable and easy to clean.