How long is the shelf life of ripe coffee beans? How long does it take to finish the cooked beans after roasting?

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Some people always ask, how should coffee beans be preserved in order to be fresh? In fact, the really roasted coffee will slowly lose its flavor with the passage of time, so we always want the coffee to be freshly roasted in order to drink fresh coffee, so how should the coffee beans be preserved? we need to understand what coffee beans are afraid of before we know how to avoid it.

(1) fear of dampness

Roasted coffee is like an active state, easily affected by the outside world, such as some humid places, because the coffee bean itself is easy to absorb the external taste and moisture, coffee beans will appear peculiar smell. This is also the reason, so I do not recommend putting coffee beans into the refrigerator, put into the refrigerator and then take out the beans will form a temperature difference, there will be condensed water, coffee will inevitably stale.

(2) fear of oxygen

Coffee beans will be ruthlessly oxidized because they are exposed to enough oxygen, so a moderate reduction of oxygen can prolong the freshness of coffee beans.

But oxygen is ubiquitous, and it rushes into your one-way valve bag within 3 seconds of opening it, so it's hard to block the air.

(3) fear of light and heat

What we are talking about here is not that coffee beans can not face the light source, but that roasted coffee belongs to food, and exposure to the sun will lead to the rapid reproduction of microorganisms and affect the quality of coffee. Pleasant temperature and sunlight are hotbeds for bacteria to multiply. Therefore, the bags of Qianjie coffee are opaque Kraft paper composites.

How long will the coffee beans last?

In general, the coffee beans used in hand-brewed coffee are single beans, that is, coffee beans from a single origin, which can better reflect the unique flavor of the producing area. Good coffee beans are directly reflected in flavor, defect rate and baking freshness. Defective beans will directly affect the overall flavor of coffee, and it is best to choose freshly roasted coffee beans. In the past, most of the medium and shallow roasted beans of street coffee as an example, the shelf life as food is about 6 months, but as high-quality coffee, the best taste period of coffee beans is 4-30 days, and the exhaust period of some beans is relatively long, which can be extended to about 45 days.

In fact, as consumers, do not over-pursue the freshness of coffee baking, freshly roasted coffee beans (after thoroughly cooling) should be stored in a bag containing an one-way exhaust valve as soon as possible. Although this is the freshest, but the texture is not stable, for example, there will be a large amount of carbon dioxide escape, so we need to wait patiently for the coffee beans to enter a stable state. This process is commonly known as "raising beans".

As for the bean cultivation period, the specific situation of each bean is different, some can taste the best flavor in four days, some take two weeks, and Qianjie coffee recommends a bean cultivation period of seven days. However, coffee players also do a test of their own coffee, freshly roasted coffee, brew a pot of coffee every day to observe its flavor changes, so that you can accurately find out the bean cultivation period of this coffee.

Qianjie Coffee once did an experiment in which a bag of Colombian San Jose beans baked in front street coffee was sealed and stored in a bag with an exhaust valve for three months before brewing, and it was found that the coffee bean could also expand exhaust during steaming, and the taste still had a lasting flavor. Therefore, sealed preservation is very important for the freshness of coffee beans.

How to better store coffee beans

1. Save in a bag with an one-way valve

Coffee beans are generally packaged in bags with one-way valves, which are good enough as containers to preserve coffee beans.

But don't forget to squeeze the air out of the bag and press the zipper when saving. Let the one-way valve bag show a flat state, reduce the internal oxygen and delay the oxidation of coffee.

two。 Keep it in a sealed jar and keep it fresh with carbon dioxide.

In addition to one-way valve bags, many cafes and coffee bean merchants use sealed cans as containers to preserve coffee beans.

Although there is no one-way valve, the sealed jar can use carbon dioxide as a prop to keep fresh. Roasted coffee beans will continue to emit carbon dioxide and squeeze oxygen in a sealed environment. At the same time, carbon dioxide is heavier than oxygen, so with carbon dioxide emissions, carbon dioxide will wrap coffee beans and reduce the contact between coffee beans and oxygen.

Qianjie coffee is recommended to choose sealed cans with opaque and good thermal insulation as storage containers.

Finally, no matter which kind of preservation container, the most important thing is to avoid light, heat, oxidation and moisture, so as to better preserve coffee beans and maximize the retention time of coffee flavor.

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