The skill of making Coffee by hand to extract five elements of good Coffee

For the extraction of coffee, we have talked about too many skills and points for attention, but there are still many variables in making coffee. Today, Chongqing Brista Coffee West Point Liquor training School will introduce to friends the five elements of extracted coffee. Mastering these five major extraction elements can give us a new understanding of coffee making. Next, let's take a look at these five elements: 1. Fresh coffee beans, 2. Correct grinding, 3. Good water quality, 4. Suitable water temperature, 5. Make it gently.

In the process of brewing coffee, the various ingredients in coffee beans are released into the water by the dissolution of water, which we call "extraction". If you want to make a good cup of coffee, you should extract the oil and flavor substances from the coffee beans in the right way to minimize caffeine and bitterness.

There are many ingredients in coffee beans, the most familiar is the refreshing caffeine, in addition to caffeine, there are many oils, minerals, acids and aromatic substances, if a lot of these substances are dissolved in water in the process of brewing coffee, we say that the extraction rate of this cup of coffee is very high, on the contrary, the extraction rate is low.

We only want to extract oil and aromatic substances from coffee beans, not caffeine and other bitter ingredients, so another definition of a good cup of coffee is "a cup of coffee that correctly extracts substances from coffee beans".

The principle of coffee extraction: the good substances in coffee beans are dissolved by water more quickly, while caffeine and bitter substances that we do not want will be dissolved more slowly, so, the correct brewing is to carefully control the time of coffee powder soaked in water (along with the thickness of grinding) in the process, and interrupt the extraction reaction at the right time to get the best quality coffee.

Coffee beans must be fresh. Freshness is as important to food as air is to living creatures. the delicacy of food often depends on its freshness. The fresher the food is, the more it can show its own characteristics. By the same token, the first element of good coffee is fresh coffee beans! Good coffee must be ground immediately before brewing, because after grinding, the surface area of coffee powder is tens of thousands of times larger than that of the whole coffee bean (stronger adsorption to surrounding water, flavor molecules, powder layer, etc.). The flavor molecules in coffee interact with oxygen molecules in the air, resulting in the rapid disappearance of aroma and taste), the best time to keep fresh is as short as a few minutes! Of all the cooking methods, espresso has the highest requirement for the freshness of coffee beans, which takes only ten days and only five minutes to grind.

The concept that must be promoted: a good bean grinder is more important than a good coffee maker! In the pursuit of good coffee, a high-level bean grinder is absolutely necessary. Different cooking methods and habits have their own suitable grinding thickness. Espresso is suitable for fine grinding, filter type and plug pot are suitable for medium grinding, and French pressure is suitable for rough grinding. In terms of the time of soaking coffee powder in water, the longer the time is, the thicker the grinding particles are; the shorter the time is, the finer the grinding particles are. In order to extract the substances from the coffee beans correctly, it is also very important to make the particles uniform in addition to grinding the coffee beans into different degrees of thickness. So to make a good coffee, there must be a bean grinder that can grind a uniform powder, otherwise everything is empty talk.

The water temperature suitable for brewing coffee is about 85-95 ℃, and the brewing temperature depends on the degree of roasting of coffee beans. The principle is that beans that are deeply roasted are brewed at a lower temperature, while beans that are shallow are roasted at a higher temperature. If you don't know which temperature to use, it is recommended to start at 90 ℃, which is suitable for most coffee beans. Then adjust the temperature according to their preferences.

Make it gently. Brewing coffee is the interaction between water and coffee beans, the action of extraction should be done by water, not by the power of brewers! The only thing the brewer has to do is to let each particle of coffee powder be evenly surrounded by water, and leave the rest of the work to the water. The key here is: make it gently. Whether it is the stirring of the plug pot or the flushing of the flushing pot, please use the state of mind to treat your lover, gently brew the procedure, in other words, no matter what you do, please do it gently: gently stir, gently inject water. In short, if you can brew it with the mood of "want to make a good cup of coffee", the whole process will naturally be very stable and gentle.

The importance of grinding uniformity of coffee beans. Only when the particle size of the ground coffee powder is uniform, can there be a consistent extraction rate, and can the variation of coffee beans in the cooking process be minimized. The ideal bean grinder must meet the three conditions of uniform grinding, fast grinding and cold grinding. A good bean grinder is definitely the right investment, it can greatly improve the quality of your coffee.