How to lock good coffee flavor? How long can the coffee be brewed and preserved?

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The most scientific guide for the purchase and preservation of coffee beans, see here! Guidelines for the preservation of coffee beans

How to lock a good coffee flavor--

Normal preservation condition

Raw beans: can be stored for one year

Roasted coffee beans: the best taste period is 3Mur14 days, and it's OK for a month-- think about it for more than three months.

Ground coffee powder: not boiled for 15 minutes-flavor begins to go out of shape-

So make your own coffee-at least buy fresh baked beans-and don't ask the store to grind first-buy a bean grinder first! The problem with the bean grinder-- next time--

The recent hot weather-- coffee beans-- sometimes left in the car for 3 hours-- almost out of shape for 10 days--

Because after the coffee is roasted-- the chemical reaction of the coffee does not stop-- there is CO2 emission-- especially if the coffee beans are filled with oxygen (O2) environment-- the elements that contribute to the coffee reaction--

1. Coffee beans purchased by ordinary stores Will be packaged with a so-called one-way exhaust valve-the gas in the package can be discharged through this valve, so that the coffee beans can be stored in a more "anoxic" environment (due to the exhaust CO2 squeezing out O2) So the coffee response slows down-- we experiment-- but this exhaust valve slows down the coffee flavor dissipation by 30% (in my opinion-exhaust valve advocates don't hit me)-- in fact, the main function-- coffee beans are packaged immediately after roasting-- exhaust (CO2) about twice the volume of coffee in a week. If it is not discharged at the right time-- when the coffee may "explode" (that is, the package burst)--

two。 In fact, illy, a big coffee maker, has a kind of aluminum canned coffee beans-we may have bought it for more than a month! But why do consumers always feel fresh when they open it and start cooking-it is known! It's packed in aluminum cans-- and filled with N2-- to keep the coffee beans in an oxygen-free environment-- so even if you buy them for more than 30 days of roasting-- it always feels like the freshest coffee beans in 3Murray for seven days.

3. Can raw coffee beans be vacuum packed into bean bricks?-- such as the high-quality vacuum rice bricks bought in stores-- which are indeed sold by many big coffee factories in Germany-- generally do not! We don't have a really vacuum machine and packaging-- it's known-- if the air is pumped in a negative pressure environment (there's still O2)-- which speeds up the chemical reaction and flavor dissipation of coffee--

So usually I roast coffee beans-- I wrap them in a chain bag-- squeeze out and seal the air inside-- it's not the best way-- usually I start cooking the beans within a week-- and then I change her into sealed cans.

And this amount is usually controlled in the 200g--0.5lb room, using chain bags and 850ml buckle sealed cans--

Above, put the coffee beans you want to drink for a week in a sealed can-- and finish the beans in two weeks-- really haven't had "stale coffee" for a long time.

But what I just said-- beans are sometimes carried in the car for four hours-- especially in the recent hot weather-- it seems that the flavor of beans has changed a lot.

Read some articles--

Beans should be frozen--

Freezing method--

Be sure to use a sealed chain bag-- squeeze out the air at the same time-- preferably a double seal-- then put it in the freezer-- if possible, a layer of bread and a layer of newspaper--

Once bought a piece of ice in Xinying, the shop owner wrapped it with several layers of newspapers-- back in the north, the ice is still hard-- you can also go to Xindian and there is a turtle (Gui) Mountain Power Plant in front of the Feicui Reservoir. The Zhizai ice sold by Taiwan Power Company is wrapped in newspapers.

In the past two weeks, I went south and wrapped it in the car for four or five hours-- Hey, hey! Beans are like popsicles--

Especially when we take things out of the freezer-- moisture condenses in the air at room temperature-- there are water droplets sweating.

In fact, the above double seals and newspapers-- when warming up-- don't rush to open the bag-- when the beans return to room temperature (about 2Murray for 3 hours), even if there are drops of water outside to dry first-- or the newspaper has been sucked away-- open the beans-- never condense moisture in the air--

That's my opinion-- in fact, this can sort out how to preserve coffee beans that we buy from stores-- to extend the duration of coffee taste.

It is recommended to buy it back and pack it in a week's consumption-- the suggestion to be used after a week can be frozen in a chain bag (outsourced newspaper)-- just measure the sealed jar and put it at room temperature within a week-- and frozen coffee beans. Remember to give 2Mui 3 hours of rewarming time to open the sealed bag-- this is a way to prolong the taste of coffee.

Give it a try!

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FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。

Important Notice :

前街咖啡 FrontStreet Coffee has moved to new addredd:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473