Good coffee and bad coffee the standard of quality coffee
Good coffee and bad coffee
Friends who don't know anything about coffee often ask me what kind of coffee is the best. Is it Blue Mountain? I generally replied that my favorite coffee is good coffee. The answer is, of course, based on quality. Whether you like Thai rice or fragrant rice, or northeast rice, first of all, the rice must be of high quality, preferably new rice, moth-free, no impurities, and the same is true of coffee.
So let's learn what high-quality coffee should look like. And what effect will the impurities in the coffee have on the coffee flavor?
The standard of quality coffee
1. High-quality raw beans without defective beans (raw beans with few defective beans such as fermented beans and moldy beans, but not high-priced beans)
two。 Freshly roasted coffee (coffee is best served within two weeks after roasting, preserved as beans and ground before brewing)
3. Freshly ground coffee
4. Freshly brewed coffee
The summary is as follows: the so-called good coffee quality coffee can be defined as "high-quality raw beans remove defective beans, roast properly and extract correctly when fresh". Good coffee is not necessarily good coffee, but bad coffee must be bad coffee.
In the definition of high-quality coffee, it is not difficult to see that the first flawless bean is the top priority of the whole link. What is defective bean?
Which are the defective beans that affect the flavor of high-quality coffee?
Moldy beans: cyan and white bacteria grow because they are not completely dry or are too wet during transportation and preservation, which will make the whole cup of coffee mildew if mixed into roasting and grinding.
Fermented beans: there are two main causes, one is the process of soaking in the washing fermentation tank, which is formed by water pollution, and the other is that the moisture in the warehouse makes it ferment and makes the surface of the beans mottled. It is not easy to distinguish from the appearance, but special attention should be paid to the rotten smell if mixed with the coffee.
Dead beans: beans with abnormal results. The color is not easy to change because of baking, so it is easy to distinguish.
Immature beans: pick them when they are not ripe and have a fishy smell. Lack of the luster of ripe beans, and it is not easy to distinguish them at beginners.
Shell beans: caused by poor dryness or abnormal mating, the beans break from the central line. It is easy to produce uneven baking.
Worm-eaten beans: when the coffee fruit ripens and turns red, the worm lays an egg inside. The coffee fruit is an important nutrition for the growth of larvae, leaving moth-eaten beans on the surface. It will cause the coffee liquid to be cloudy and produce a strange smell.
Black beans: early maturity, falling on the ground, long-term contact with the ground and fermentation blackening. It smells rotten and muddy.
Shell beans: the endocarp is covered on the inside of the pulp of coffee beans and remains on the washed coffee beans. It will cause astringency.
Cocoa: it is caused by natural drying that the pulp remains and is not fully shelled. It smells like dirt.
In addition to the above all kinds of defective beans, there are stones, glass, branches and other impurities, light cause the roaster can not be used normally, heavy is scrapped.
If you want to know how these defective beans affect the flavor of coffee, the best way is to drink a cup of coffee made of defective beans, you can deeply appreciate the importance of hand selection before baking.
Next, let's take a look at the coffee varieties that are more common in the mainland and what kind of roasting methods they are suitable for.
What is the right way to bake?
For example, Colombia's special selection, which is sour and bitter, requires shallow baking, and is also required to cover its sour taste, so shallow baking is obviously not suitable for it.
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Coffee roasting stage and main use stir-fried coffee raw beans also known as roasting
Stir-fried coffee and raw beans are also called Roasting. Coffee according to roasting to remove moisture, the composition will also undergo chemical changes, resulting in volatile aroma, and become caramel color. As a result, the weight is reduced by 15% to 20%, and the capacity is increased by about 30%. The unique flavor of coffee-sour, bitter, sweet, astringent, mellow, etc., is produced by roasting. Usually the method of making coffee is traditional, according to
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How to choose the freshness of coffee beans is an important factor affecting the quality.
No matter what kind of coffee beans, freshness is an important factor affecting the quality. When shopping, grab one or two coffee beans and chew them in your mouth. If the coffee beans are crisp and sound, and the tooth pods stay fragrant is the top grade, but it is best to squeeze them with your hands to feel whether they are solid, rather than buying empty-shell coffee. If the coffee bean has lost its fragrance or smells stale, it means
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