How much water is appropriate for brewing coffee powder? Hand brewed coffee proportion water temperature grinding degree parameter knowledge

The powder-water ratio of coffee is a very important parameter of hand-brewed coffee. Popularly speaking, in the case of a fixed amount of powder, there is a water injection just enough to show the flavor of the coffee incisively and vividly. Therefore, the proportion of powder and water to learn to find coffee is also an important part of learning to make coffee.

What does powder-water ratio affect coffee? Let's do a small experiment in Qianjie first. under the condition that the other brewing parameters are fixed, three pots of hand-brewed coffee with a powder-to-water ratio of 1:10, 1:15 and 1:20 are compared.

In the front street of coffee beans, the medium-and shallow-roasted Asaria coffee beans of Kenya were selected, and the amount of powder was fixed at 15g, that is, the amount of water injected into 3 pots of coffee was 150ml, 225ml and 300ml respectively. The grinding degree is 80% of the screening rate of the No. 20 screen and the water temperature is 91 degrees Celsius. The concentration measured by the concentration meter was 1.93% 1:10, 1.35%, 1.35%, 1.04% and 1.04%, respectively. From this, we can also see that when there is less water injection, the coffee concentration is high, and when there is more water injection, the coffee concentration is low.

But it is not to pour less water if you want to drink a little stronger, and a little more water if you want to drink a little lighter. Because in addition to the concentration, the amount of water injected also affects another parameter related to the taste of coffee-the coffee extraction rate. After knowing the concentration of coffee liquid, we can easily calculate the extraction rate of coffee. At 1:10, the extraction rate was 16.43%. The extraction rate was 18.55%. The extraction rate was 19.72%. The more water injected, the higher the extraction rate of coffee, but looking at the increase in the extraction rate of coffee, we can also understand that if the water content of 300ml is divided into two parts, the water extraction rate of 150ml can reach 16.43% before injection, while the subsequent injection of 150ml water can only increase the extraction rate by 3.29%. (the first 40 per cent of the extracted flavor of the four or six brewing method is based on this conclusion, and the last 60 per cent of the concentration adjustment is also based on this conclusion.) that is, although a higher concentration of coffee can be obtained with less water injection, the coffee extraction rate is lower, that is, the overall coffee substance is less. Just like powdered water is only more sour and bitter than 1:10 coffee, too high concentration can easily cause discomfort.

When more water is injected, more substances will be extracted from the coffee, but because the later the water injection extraction efficiency is greatly reduced, the concentration will become very light. Moreover, the water-soluble coffee substances come out with our favorite sweet and sour flavor, as well as unpleasant bitterness. If there are more extracted substances, there will naturally be more bitter substances. Just as powdered water tastes lighter than 1:20 coffee, it has no coffee flavor, and it has a slightly bitter taste. Therefore, the appropriate ratio of powder to water is to adjust the relationship between concentration and extraction rate, so that they can reach the best state. 1:15 almighty? You may see that the recommended ratio for a lot of hand-made coffee is 1:15. If you see too much, there will be a fixed powder-to-water ratio. In fact, this is not the case. the recommended parameter for the hand-flushing powder-to-water ratio is 1:15 because 1:15 is the safer ratio (it is difficult to roll over), because the recommended parameters are aimed at a wide range of audiences, including many people who are new to coffee. Therefore, we need a very safe parameter, such as powder-to-water ratio, water temperature, water injection mode, which are easy to grasp in the data to reduce variables. Everything serves for the grinding degree, which is a very difficult variable (many beginner coffee brewing problems come from the wrong grinding degree).

If you have begun to study the ratio of coffee powder to water, it proves that you have started and have a certain understanding of the brewing parameters. Then for beginners, the fixed variables such as powder-to-water ratio and water temperature will become variables that can be adjusted to make coffee tastier. The difference of 5ml water how much is the difference between injecting more 5ml water and less 5ml water? The difference between the data tested by the concentration meter is only 0.02%, and the difference between the two is almost negligible. Qianjie tells you a story. On one occasion, when Qianjie was brewing a kind of rosy summer coffee, it used 1:15 powder to concentrate the flavor and could not feel the "taste of money". The second adjustment is only the amount of water injected with 5ml (total 230ml) than the previous one. This time, it tastes much more comfortable, and the flavor comes up at once.

Finally, Qianjie summed up some experiences about the ratio of powder to water to share with you. 1. 1:15 is not the only powder-to-water ratio, nor is it necessarily the most suitable one. According to different coffee beans and their own flavor preferences, it may be 1:14 or 1:16. 2. The powder-to-water ratio of general hand-brewed coffee ranges from 1:13 to 1:18, in which it is easier for people to find their own flavor and taste. 3, for some hard coffee beans, you can appropriately extend the powder-to-water ratio, for example, between 1:16 and 1:17. Hardness refers to cooked beans, such as coffee beans that grow at high altitude and are lightly roasted. 4. Deep-roasted coffee generally shows a mellow flavor with a relatively pleasant concentration. You can choose between 1:13 and 1:15 according to your concentration preference.