What does the ratio of powder to water in coffee mean? What does the technical term for fine coffee mean by powder-to-liquid ratio?

Powder-to-water ratio and powder-to-liquid ratio are different units of measurement used in coffee making. Because the names are very similar, many novice friends are easy to be confused, thus causing deviation in the taste of the extracted coffee. So, Qianjie will share the difference between powder-to-liquid ratio and powder-to-water ratio again today.

Let's talk about the proportion first! Proportino is a mathematical term that indicates the contrastive relationship between quantities. As long as we understand the meaning of this term, we can directly understand the meaning of powder-water ratio and powder-liquid ratio in coffee terms. The so-called powder-to-water ratio refers to the ratio of coffee powder to water used for extraction. For example, 1:15, which we often refer to, means that every 1g of coffee powder should be extracted with 15ml water. The application range of powder-water ratio is very wide, it can be said that except for some coffee production with non-quantifiable water injection, most coffee extracts are more suitable for powder-water ratio, first, because it is more convenient to calculate, second, it can better control the amount of water injected, extract the flavor substances we want, and third, reduce the error caused by different water absorption of coffee beans.

Then let's talk about the ratio of powder to liquid. The ratio of powder to liquid means the ratio of extracted coffee powder to extracted coffee liquid. Like 1:12 means 1g coffee powder, you need to extract 12ml coffee liquid. Whether it sounds different from the proportion of powder and water, but in fact, the meaning is much different, because they are not units that can be converted by the same amount.

If we use 225ml's hot water to brew coffee, we will not get the same weight of coffee liquid in the next pot, because the coffee powder will absorb some of the water, so it will eventually cause less coffee liquid to drip into the pot than the injected hot water! Basically, coffee powder absorbs about twice its weight. We can calculate the weight of coffee liquid directly according to this principle, which is also the conversion formula of the ratio of powder to water and the ratio of powder to liquid. For example, if you use 225ml's hot water to extract 15g of coffee powder, 15g of coffee powder will absorb twice as much water as 30ml. When we subtract 30ml from 225, we get the approximate weight of the coffee liquid, about 195ml. Why use the left and right peace treaty? Because the water absorption of coffee beans is not absolutely twice their weight, it's just closer.

Generally speaking, powder liquid is more used in espresso extraction than in espresso extraction, because the Italian coffee machine cannot measure the hot water used in the extraction process, so it is necessary to use the powder liquid ratio instead of the powder water ratio. But this is not to say that other coffee extraction methods will not use the powder-to-liquid ratio, such as hand-brewed coffee will also have friends to use the powder-to-liquid ratio instead of powder-to-water ratio measurement. But often, the fear is that some novice friends in the use of powder-liquid ratio measurement, mistakenly compare powder-liquid ratio to powder-water ratio.

For example, if the powder-to-water ratio at 1:15 is converted into powder-to-liquid ratio, it should be about 1-13-1-13. 5. If novice friends directly think that the powder-to-water ratio is the powder-liquid ratio, and the powder-liquid ratio is measured at 1:15 when extracting coffee, then add the two portions of hot water absorbed by coffee powder, you can get the proportion of powdered water that the injected hot water will go to 1:17. The higher the amount of water in the powder-to-water ratio, the more hot water will be used for extraction and the concentration will be relatively lower (and vice versa). This will not only dilute the coffee concentration, but also extend the extraction time because of the increase in the amount of water, causing the coffee to extract some substances that you may not want.

Therefore, the difference between powder-liquid ratio and powder-water ratio must not be confused. Qianjie is not recommended for beginners to use the proportion of powder to make hand flushing, on the one hand, it is difficult to control the amount of water injected, and the other is unable to get a stable extraction. When the problem is difficult to find the root cause, for novice friends, it is a very headache. Therefore, when making hand flushing, all novice friends had better give priority to the proportion of powder and water.

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