Matters needing attention in the selection and purchase of bagged coffee beans _ what are the packages of bagged coffee beans _ recommended

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Freshness is the life of coffee-how to determine the freshness of bagged coffee beans

There are three steps: smell, see, and peel.

Smell

Put the coffee beans close to the nose and take a deep smell to see if you can clearly smell the aroma of the coffee beans. If so, it means the coffee beans are fresh enough. On the contrary, if the aroma is weak, or if the smell has begun to appear greasy (such as peanuts or nuts will appear for a long time), the coffee beans are not fresh at all.

No matter how much effort you put into grinding and cooking such coffee beans, it is impossible to make a good cup of coffee.

Look.

Spread the coffee beans on your hands, determine the origin and variety of coffee beans, and determine whether the coffee beans are roasted evenly.

Peel off

Take a coffee bean and try to peel it off by hand. if the coffee bean is fresh enough, it should be easy to pull away, and it will have a crisp sound and feeling. If the coffee beans are not fresh, you will find that you have to work hard to get rid of a bean.

Another important point to observe when peeling off the coffee beans is to see if the firepower is uniform when baking. If it is uniform, the outer skin and inner layer of the beans should be the same color. If the color of the surface layer is obviously much darker than that of the inner layer, it means that there may be too much firepower during baking, which will also affect the aroma and flavor of coffee beans.

Matters needing attention in the purchase of bagged coffee beans

To start buying coffee beans, first choose a coffee shop where business is booming. The freshness of roasted beans is the life of coffee, so choose to put fresh coffee beans in the warehouse, the place is clean and there is no oil residue on the beans, and there is no direct sunlight and no hot shops around. It is also a good way to buy in your own baking shop where you think you are fragrant and mellow.

When buying baked beans, you can specify the refreshing beans, hoping to drink some slightly sour ones, with a strong bitter taste, or directly tell the clerk to choose for your preferences.

When buying rear care shop grinding, be sure to inform the manager of the coffee making utensils used to match those props grinding (such as electric coffee maker, filter, paper, siphon, etc.).

When buying canned coffee powder in the supermarket, choose the label (the type of beans or the tendency to taste, etc.), depending on what you like.

The secret of coffee bean preservation

Roasted coffee beans are easily oxidized by oxygen in the air, which deteriorates the quality of the oil, volatilizes and disappears, and then deteriorates quickly through temperature, humidity, sunlight and so on.

Especially after multi-layer treatment of low-caffeine coffee beans, oxidation is carried out faster. Therefore, in order to maintain the aroma and quality of coffee, how to package and preserve coffee beans has become a great knowledge.

Coffee beans produce three times the volume of carbon dioxide after roasting, so the packaging of coffee mainly needs to deal with the carbon dioxide produced by coffee beans in addition to avoiding contact with air oxidation.

Gaseous packaging

In the most common packaging, beans and powder are packed in empty cans, glass, paper bags or plastic containers, and then capped or sealed. Low preservation, and due to constant contact with the air, need to drink as soon as possible, drinking period is about a week.

vacuum packing

The packing container (can, aluminum foil bag, plastic bag) draws out the air from the container after filling the coffee. Although it is called a vacuum, it actually removes at most 90% of the air, and the surface area of the coffee powder is larger than that of the coffee beans, and even the remaining air can easily combine with the powder to affect the flavor.

Gas filling packaging

A pinhole is designed on the metal bag. After filling the coffee, inactive nitrogen is poured into the bag and the carbon dioxide pinhole is squeezed out. This method is more popular, but after all the gas is discharged, the oxygen is quietly drilled back into the bag from the pinhole.

Gas sorbent packaging

Put the absorbent made from deoxidizer and decarbonization into the bag, the air in the package can be easily absorbed, and the carbonation produced by the coffee can also be inhaled, but the aroma of the coffee will also be sucked away is its disadvantage.

One-way exhaust valve packaging

At present, it is the most ideal outer packaging of coffee, all in the shape of beans rather than powder. It is similar to the pinhole metal bag, except that the gas in the bag can be discharged through the pinhole, while the unidirectional piston can prevent the oxygen from entering the bag.

Immediately after the beans are roasted, the coffee manufacturers cool and pack the beans and pour nitrogen into the bag, which has discharged the gas from the bag. Although this kind of packing method is ideal, but the material is expensive, the cost is high, at present only the selected coffee of large companies will use this kind of packaging method.

Coffee beans, the dark brown beans seem ordinary, but they have a lot of knowledge at all stages.

Matters needing attention in choosing and buying coffee

When buying coffee, you should pay attention to its packaging, because coffee will emit more than three times its own volume of carbon dioxide (CO2) after roasting. If coffee beans are in constant contact with the air at the same time, it will accelerate fat oxidation and make the coffee taste lost. The use of sealed packaging is easy to be damaged by the expansion of carbon dioxide in the bag. nowadays, most packaging first put a hole in the bag, and then stick a plastic patch on the hole. when the pressure of carbon dioxide release is large enough to push the patch away, it will bounce back and cover the hole to prevent air entry. The cost of this method is not high, so most businesses use this method to pack coffee beans, but the annoying thing is that because of the simple structure, it is only glued, so it is easier to fall off, and at the moment the plastic patch bounces back, the air will still enter a small amount.

At present, the most effective method is to fill and pack with a special patented one-way exhaust valve, which can release the carbon dioxide produced by coffee internally and prevent the invasion of external air. The function of the exhaust valve is to use high temperature and pressure to seal it firmly in the bag. Although the cost of this high-pressure sealing machine and exhaust valve is high, it is currently recognized as the most ideal way to keep fresh. You can taste fresh coffee like freshly baked coffee anytime and anywhere.

In order to maintain the freshness of coffee, it can be purchased at a time of about half a pound (about 200 grams) depending on personal consumption. The method of preservation is to isolate the light, heat and moisture. Due to climatic factors and high humidity, Taiwan is prone to deteriorate and deteriorate in preservation. After buying it, squeeze the air out of the bag and put it in a sealed jar or wrap it in a newspaper and save it as soon as possible. After opening the package, the storage life of coffee beans is about a week at room temperature and about half a month in the freezer, while the coffee powder is kept at a normal temperature for about three days and in the freezer for about a week.

Brand recommendation of bagged coffee beans

Qianjie coffee freshly roasted single bagged coffee beans are fully guaranteed in brand and quality, and are suitable for brewing with all kinds of utensils. And more importantly, the performance-to-price ratio is extremely high, a bag of half a pound 227 grams, the price is only 80-90 yuan. According to the calculation of 200ml per cup of coffee and the ratio of powder to water at 1:15, 15 cups of fine coffee can be made in a bag, and each cup of coffee only costs about 5 or 6 yuan, which is very cost-effective for cafes to sell dozens of yuan a cup.

Qianjie coffee: Guangzhou bakery, the store is small but a variety of beans, you can find a variety of unknown beans, but also provide online store services. Https://shop104210103.taobao.com