Coffee knowledge taste discrimination how to distinguish the quality of coffee beans and the aroma and flavor of coffee beans

Distinguish good coffee beans from bad coffee beans: neat shape, bright color, single fried roast. After brewing, it is fragrant and mellow, and it has sufficient stamina. Bad coffee beans: not uniform in shape, and incomplete individual. After brewing, it is light and fragrant, not sweet enough.◆ The freshness of coffee beans to identify the secret nose smell: fresh coffee beans smell strong fragrance, otherwise tasteless or bad smell. See: good coffee beans are complete in shape and rich in size. Otherwise, the shape is incomplete.

Hand Press: Fresh coffee beans are crispy when pressed, and there is fragrance floating out when cracked.

Color: dark with black coffee beans, brewed coffee with bitter taste; yellow coffee beans, brewed coffee with sour.

How to judge the quality of coffee beans from the appearance??? Can be from its color---whether the luster is good, the color is uniform without stains; smell its fragrance---whether it is fragrant; test the crispness--put it into the mouth and bite, whether it is crisp and sound, taste good, and finally see if the bean shape is full and heavy. Because there is no good coffee beans/powder is not able to make a mellow coffee. Secondly, pay attention to whether the packaging of coffee beans is intact, if the packaging bag has air penetration, then coffee beans are easily exposed to air and make beans absorb moisture, affecting the quality of coffee beans.

Delicious coffee can be judged from the shape of the roasted coffee beans, as shown in the figure. Of course, there can be no bad coffee beans mixed in, more attention should be paid to the normal beans will also be mixed with high-quality coffee beans and cause obstruction, brewing a delicious coffee fried roasted beans, first of all must be beans big fat, and uniform, followed by the size of the same and no stains. These are the main points of visual discrimination, if you look carefully, should not be difficult to distinguish. Fermented beans: coffee beans that fall into the soil before harvest. The sour smell will have a great impact on the taste of coffee.

Dead beans: also known as immature beans, or affected by climate and other factors, development is not sound, fried after baking will produce fried spots, so that coffee has a green taste. Black beans: Fermented beans, rotten, blackened coffee beans. Because it is black, it can be distinguished from normal coffee beans at a glance. Worm beans: Corroded coffee beans defective beans: may be stuck during operation, or handling carelessly, resulting in coffee beans defective. Will cause fried baked when there are fried spots, and will produce bitter and astringent taste. Others: beans with thin skin, stunted beans, beans that dry to produce incomplete sourness, shell beans with only shell, etc.

2 judgment when grinding fully roast extracted moisture coffee can be, can brew a delicious coffee, this coffee beans can be judged when grinding. Good quality coffee beans in the grinding will be gently issued salad salad sound, gently shake the hand, the original flavor of coffee that overflow. Bad coffee beans will have a squeaky sound. There's a kind of a seizure feeling when grinding.

The easiest way to brew a delicious coffee is to sift through a filter paper. And in brewing, there is also a way to judge whether coffee is delicious, that is, when in hot water, whether the powder bulges, and when the coffee is fully roasted and extracted, there will be beautiful and detailed bubbles bulges.

4 judgment after withdrawal Although the coffee concentration will change due to the degree of roasting and withdrawal method, the characteristic of delicious coffee is that the coffee solution taken out under the same conditions is clear. The spoon can be clearly seen through the fluid in the image below, while it is almost invisible in the stone image. A cup alone is hard to tell, but if you compare it, it's clear whether the coffee tastes good or not. A cup of delicious coffee, even after 30 minutes, is still clear in color, and the taste does not change.

Judging from the taste and aroma of coffee, the acidity of delicious coffee is refreshing like citrus fruits, without strong acidity. Bitterness is mild bitterness. There is no bitter taste like smoke or scorch.

6 Judging from the quality of green beans Before discussing the shape, grinding stage, withdrawal, withdrawal, taste, aroma of each stage, as the key to distinguish whether coffee is delicious or not, but this is for completely roasted coffee beans.

Green beans before roasting, generally known as "Green", if the quality of raw beans is poor, no matter how hard to roast can not brew a beautiful coffee. Green beans are usually exported two months after harvest, and this year's crop is called New Crop. A year later it is called Past Crop. Coffee beans are crops, and freshness naturally affects their taste.

Fresh raw beans, you can enjoy the distinct characteristics of its various varieties and have a vibrant flavor. Take rice for example, if it is left for a long time, its original flavor will fade with the loss of water. Fresh raw beans, showing a bright green color, can be easily distinguished. Except for freshness. No matter what kind of variety, should also try to choose larger particles and no stains of raw beans.

You can add a little sugar and milk to pure black coffee; you can also add cinnamon and other spices to coffee like Africa and Arabia; if you are not used to the bitter taste of coffee, you can also add a little juice to your coffee…However, drinking a cup of original black coffee, able to taste the rich flavor of coffee itself, will be regarded as a coffee tasting expert. No matter how you drink it, there are still some details and knowledge about coffee tasting.

Steps: a cup of coffee to the front, do not rush to drink, should be like tea or wine tasting, there is a gradual process to achieve the purpose of relaxation, refreshing and enjoyment.

The first step is to smell the aroma and taste the aroma of coffee.

The second step is to observe the color. It is best for coffee to be dark brown, not dark and bottomless.

The third step, taste, first drink a mouthful of black coffee, feel the taste of the original coffee, coffee should be some sweet, slightly bitter, slightly sour not astringent. Then sip to taste, do not rush to swallow coffee, should be temporarily contained in the mouth, let coffee and saliva and air a little mixed, and then swallow.

Temperature: The best temperature for drinking coffee is 85-88 degrees Celsius. Because regular coffee is less stable in texture, it's best to taste it hot. In order not to reduce the taste of coffee, the coffee cup should be soaked in boiling water in advance. The appropriate temperature of coffee is 83 degrees Celsius at the moment of brewing, 80 degrees Celsius when poured into the cup, and 61-62 degrees when it reaches the mouth, which is ideal.

Generally speaking, tasting the coffee served by the host while it is hot is also a basic courtesy of drinking coffee. If a cup of good quality coffee, cool after the aroma will be reduced, taste performance and hot is consistent, or even better.

Flavor: Coffee beans contain about 5-8% sugar, most of which is converted to caramel after roasting, which is the source of aroma and bitterness, and the unconverted sugar leaves a little sweetness; tannins are released during roasting, which combine with caramel to produce a slightly bitter sweetness. Therefore, people's taste of coffee will generally be bitter, sour, sweet, fragrant, astringent several kinds.

Moderate: Drinking coffee is not like drinking wine or juice. A full cup of coffee loses interest in drinking after watching it. Ordinary only to seven or eight full for the right amount, moderate amount of coffee will not only stimulate the taste, after drinking there will be no greasy feeling, but endless aftertaste. At the same time, the right amount of coffee can moderately promote the body to recover fatigue, and the mind is refreshed.

The taste of coffee has a thick and thin point, so, can not be like tea or cola, drink a few cups in a row, ordinary drink coffee to 80-100cc for the right amount, sometimes if you want to drink three or four cups in a row, it is necessary to dilute the concentration of coffee, or add a lot of milk, do not cause nausea feeling, and in the sugar allocation may also wish to change more, make coffee more delicious. Coffee contains caffeine and more than 300 aromatic ingredients. Caffeine is an alkaloid, a small amount of intake can relax the nervous spirit, drive drowsiness, but if sustained intake, it will be toxic, causing gastritis and stomach ulcers.

Vitamin A can protect mucous membrane, skin and stomach wall, drink coffee with cheese, eggs, butter, carrots or green leafy vegetables, etc., can supplement vitamin A, so as not to harm health; such as drinking with fat-rich foods, it can enhance the body's absorption of vitamin A.

Therefore, it is scientific to drink coffee with foods rich in vitamin A and fat, such as walnuts or creamy snacks. In addition, sucrose contains ingredients that can fatigue the pancreas. Brown sugar contains the least sucrose, so it is best to put brown sugar in coffee. In addition, brown sugar or alkaline food, good for health. When drinking coffee without sugar, milk or cream should be added to protect the stomach wall from caffeine.

Source: Internet