How long does coffee taste? How do expired beans taste good? How long does coffee last?

Because of the epidemic in Guangzhou (how many nucleic acids have been tested in a month), many guests hoarded a lot of coffee beans at one time, so we all know that ripe beans have a taste period, and the flavor will decline beyond the time limit. Today's article tells you how to judge the duration of coffee and how to save expired beans.

Generally speaking, the duration of coffee appreciation

For hand-made coffee beans, the coffee beans recommended by Qianjie have a taste period of 4-30 days. In general, the flavor of coffee is not the best after roasting. Freshly roasted coffee beans have more gas in the body, so it is difficult to extract flavor substances, so there will be a 4-7-day cultivation period to discharge some of the gas.

And this exhaust process is continuous, in the exhaust process, some flavor substances will also volatilize with the gas. So it exists that the longer the coffee beans are kept, the worse the flavor will be. When the gas is almost the same, that is, the taste period of this coffee bean is up, about a month.

Theory and practice of Coffee Taste period

Not all coffee beans have a taste period of 4-30 days, this is only a rough reference period. In fact, the taste period of coffee is actually the exhaust time of coffee beans, which means that the exhaust time of coffee beans is long. Of course, the appreciation period is also affected by the quality of coffee beans, roasting methods, storage methods and other factors.

The taste periods of different coffee beans from the same roaster are not necessarily the same, and the taste periods of different roasters of the same coffee beans are not necessarily the same. The storage mode affecting the taste time is too familiar to the buyer, and the taste period of cool, dry and sealed storage will be longer than other methods.

How to judge the taste period of a coffee bean

A good way to judge, look at steaming, we all know that the role of steaming is to exhaust the gas in the coffee powder, fresh coffee beans will form a coffee "hamburger". Coffee beans that are not fresh (out of taste) do not swell. Some coffee beans have a long exhaust period, up to 40-50 days, and there are also individual coffee beans that do not swell when steaming on the 20th day. Therefore, for individuals, it is a more scientific method to use steaming to judge whether the coffee is beyond the appreciation period.

The coffee beans after the tasting period can be saved.

Generally speaking, the flavor of coffee beans is well preserved within two months (but lacks some more volatile aromas). Using normal cooking methods, it is easy to produce bitter flavors such as spices and almonds. So we can save this coffee bean by adjusting the brewing scheme.

This cooking scheme is suitable for steaming without expansion within two months after baking. Also using 15g coffee powder, the grinding degree will be one scale thicker than usual (the passing rate of the standard screen No. 20 is 75%). Because of the lack of gas, the fine powder is easy to block the sewer hole. The powder-to-water ratio and the water temperature are the same as usual.

At the beginning of the first stage of steaming with 25 grams of water for 18 seconds, it can be seen that there is no "hamburger shape" after the water comes into contact with the coffee powder (reducing the steaming time rather than removing the steaming process is because although the coffee powder layer does not expand, but there will still be a small amount of gas).

The second stage of water injection from the center around a small circle to push up the powder layer, so that the fine powder attached to the filter cup wall to prevent the fine powder from sinking to the bottom and blocking the outlet. It can be seen that a small foam has been washed out, this section of water injection to 150 grams.

When the water level drops to 1 stroke 2, inject the last section, use the middle current to circle quickly to create a whirlpool to "activate" the powder layer and force out the flavor substances. Stop injecting water until 225 grams, wait for the coffee liquid of the filter cup to flow into the next pot, remove the filter cup, and end the extraction. The total extraction time is about 1 minute 35 seconds to 1 minute 50 seconds.

Although this kind of brewing method will not change the coffee back to the rich and full flavor during the taste period, it can largely avoid some defective flavor. If you still have a lot of coffee beans in time to drink, you might as well try this method.