How to raise freshly roasted coffee beans? hand-brewed coffee takes less time to grow than Italian coffee.

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Qianjie-how to brew coffee by hand

The fresh coffee is better. Right? This statement is actually not entirely true.

There is no doubt that no one likes to drink out-of-date coffee, but the flavor of roasted coffee beans will certainly disappoint you, because the coffee is still in a state of massive exhaust at this time. Whether you are a roaster or brewer, you must understand exhaust. This article tells us what exhaust is, how it affects the coffee you make, and how to do it.

Exhaust is the process of emitting gas from coffee beans after roasting. When you bake coffee, a large amount of carbon dioxide and gas are produced inside the beans.

Many gases are released in the first few days after baking, but the problem is that these gases release small bubbles when you brew, affecting your coffee, which can damage the contact between coffee powder and water, resulting in uneven extraction of flavor and aroma substances.

In other words, if you brew freshly roasted coffee, these gases will have a negative effect on the flavor of your coffee. For this reason, it is better to wait a few days before making coffee after baking. The period of carbon dioxide emissions and chemical changes is called exhaust.

But the carbon dioxide in coffee beans is not a bad thing, it plays an important role in the quality of coffee. The 2018 Journal of Agricultural and Food Chemistry mentioned: "carbon dioxide is an important indicator of coffee freshness and plays an important role in shelf life and packaging, affecting the process of coffee extraction, affecting the formation of crema in espresso, and may also affect the sensory flavor characteristics of coffee. "

When the coffee beans exhaust too much, the flavor will be less distinct. The secret is that the exhaust time should be moderate, instead of waiting for the beans to grow old for too long.

However, how long to put after baking depends on many factors. Usually, hand-brewed coffee beans are suitable for brewing three days to two weeks and three weeks after roasting. However, the difference of each kind of coffee will also make the exhaust time different. Brewing method, treatment method, baking degree will affect the exhaust time.

In short: Qianjie is a coffee research hall, happy to share the knowledge about coffee with you, we share unreservedly just to make more friends fall in love with coffee, and there will be three low-discount coffee activities every month. The reason is that Qianjie wants to make more friends drink the best coffee at the lowest price, which has been Qianjie's tenet for 6 years!

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