How many days do you keep coffee beans? Is it all right to seal the coffee beans by hand?

Friends who make their own coffee may have a certain concept of the word beans. It doesn't matter if you don't know about friends. Let's talk about why coffee needs beans and how long it will take.

When everyone is making coffee, the moment the water comes into contact with the coffee powder, the coffee begins to bulge. "watching the coffee slowly expand and bulge." everyone likes this scene, but if it does not go through the stuffy steaming state of growing beans, there is a good chance that the gas will run abruptly and countless atmospheric bubbles will emerge.

Most people (especially the Guang door people) cling to fresh ingredients while they are fresh and hot. But in the face of coffee beans, this is absolutely not urgent. When the coffee was just roasted, the coffee beans did not have much aroma, only full of roasting flavor. At this time, the coffee beans are rich in carbon dioxide and are very active (just like a child, running around and can't stand it).

At this time, when cooking, there will be a great hindrance, when the coffee powder does not exhaust gas, it will affect the subsequent flavor extraction. In the follow-up extraction, the powder layer is still bubbling and exhausting, which will form disturbing flow and cause uneven extraction. This makes it harder to make a good cup of coffee. On the other hand, roasted coffee beans release 60-70% of the gas after about 4 days, and then the gas is not so rapid and will be discharged slowly and in a small amount. At this time, the coffee beans tend to stabilize (just like an adult man, calm and mature, giving off charm). At this time, the flavor of the coffee beans will be infinitely close to the peak, and then the flavor will gradually decrease with the slow exhaust.

The expansion of the coffee bag shows that the coffee bean in the exhaust is a continuous process, after the exhaust gas means that the coffee bean is no longer fresh, naturally there is almost no flavor. Therefore, the flavor trend of coffee is closely related to the coffee exhaust process. After severe exhaust, the coffee flavor reaches its peak, and then with the slow exhaust, the flavor also slowly declines. The cultivation of beans is to let the flavor performance of coffee beans reach its peak. So how do we know if the flavor of coffee beans is at its peak? There is no very accurate data, including the advice of the baker, which is only a suggestion, and there is no guarantee that the flavor is the best for seven days (maybe the eighth day or the ninth day). The duration of coffee beans is affected by the roasting degree of coffee beans, the roasting style of coffee, and the heat transfer mode of roasting. First talk about the impact of the heat transfer mode of baking on the time of coffee and beans, which is now roughly divided into direct fire, semi-direct fire and hot air. For the coffee beans baked in these three ways, the direct heat usually takes longer to grow the beans, followed by the semi-straight fire, and finally the hot air. In terms of roasting degree, the bean cultivation period of light-roasted coffee is shorter than that of deep-roasted coffee. For example, the semi-straight-fire roasting in the former street takes about 4-7 days for medium-shallow roasted coffee beans and 7-10 days for medium-deep roasted coffee beans to achieve a better flavor.

Coffee roasting style, which is like a coffee roasting contest, with the same beans, there will be differences between each player's roasted coffee beans, this is the roasting style. The impact on the coffee cultivation period is that some coffee roasters like to bake at a fast pace, while some roasters like to slow down the pace, so that the main flavor of the beans may be the same, and other delicate flavors will be different. including the bean cultivation period is also different. Therefore, the 4-7-day bean raising period mentioned in Qianjie does not necessarily mean that all coffee beans are the same. Qianjie only draws a conclusion based on its own baked coffee beans, which should be applicable to the coffee beans baked in Qianjie. But it also needs to be determined according to the actual situation. So as a consumer, how to judge the duration of coffee beans? First of all, as a consumer, we must clearly know that the baking style of each store is different, so do not use the beans in store A to suggest putting them into the beans in store B. Then the information you must know is the baking date of this packet of coffee beans. If the coffee beans are baked in the same store, then the baking style is the same, so it can be deduced according to the law. First of all, we need to raise coffee beans whose fundamental purpose is to enjoy a cup of coffee at its peak. You have to start from reality and use your senses to explore. For a strange coffee bean, you can make a cup of coffee every day to taste it and compare the taste of today with that of yesterday.

When you find that the coffee flavor is getting better day by day, and suddenly one day, the aroma and flavor is slightly weaker, then this inflection point is the period of raising beans, which can be used as a basis for the same type of coffee beans in the future. In the future, coffee beans do not need to be tasted every day. After all, every time you open a coffee bag, it will affect the state of the coffee beans.