Is it necessary to pour the coffee beans into the sealed can? is the one-way valve better or the coffee bean sealed?

This time we would like to tell you what kind of sealed cans to buy to preserve the coffee beans.

First of all, the conclusion: the more it can withstand high pressure without rupture and leakage, the better for coffee beans.

Vacuum sealed tank

Some sealed cans boast that they can be ventilated after sealing to keep the ingredients in the cans fresh. This function is effective for general food materials, mainly to reduce the possibility of microbial growth after excluding oxygen and moisture. However, if coffee beans (roasted beans) are preserved, pumping causes low pressure in the environment, which will accelerate the exhaust of cooked beans, thus accelerating the aging of cooked beans.

So, this is the worst choice.

Sealed tank with exhaust valve

This option is better. If the cooked beans you put into the jar are freshly baked, the subsequent exhaust of the cooked beans will drive away the original moisture and oxygen from the exhaust valve, reducing the chance of bacteria reproduction. However, it can not "slow down" the aging rate of ripe beans, just so that cooked beans go through the process of natural aging, bacteria do not mess up.

Airtight sealed tank that can store pressure

This is the best choice! After the cover is sealed, the exhaust of cooked beans causes high pressure in the tank, which can effectively slow down the rate of continuous exhaust of cooked beans, and the aging speed becomes slower at the same time, thus prolonging the taste period of cooked beans.

In order to achieve this effect, the sealing tank lid must be equipped with effective fasteners, and the sealing cans sealed only by the friction of silicone strips are definitely not suitable. In addition, all exhaust valves, pressure relief / pressure relief devices are redundant, they increase the cost of the jar, but do not help to preserve cooked beans.

The material of the sealed tank

Please choose a material with a smooth surface and high pressure resistance.

Plastic definitely won't work. It is a loose structure polymerized by many long-refined molecules, and the flavor molecules of coffee can easily get into the wall of the pot or even out of the jar, which will lead to poor freshness and residual taste. You may have had the experience that some thin-walled plastic cans of coffee beans become sticky after a few days. .

A thick glass jar should be the best choice, especially if it is food-grade colored glass.

If you choose a ceramic jar, please choose a glazed tank inside.

Try the food container in your home. Under the premise of no residual flavor, if you seal the fresh cooked beans for a few days, if it does not burst, and you obviously feel the sound of gas escape when opening the lid, congratulations, it will be left to it to keep the cooked beans fresh in the future.