What are the different extraction times for different kinds of coffee beans with different proportion of hand-made coffee gouache?

What are the different extraction times for different kinds of coffee beans with different proportion of hand-made coffee gouache?

If you measure unboiled water. High school physics taught us that the density of water at room temperature is equal to 1 (or about 1). Therefore, at room temperature, the mass of 1 mL raw water can be regarded as equal to 1 g (1 g raw water = 1 mL raw water).

If you measure hot water directly, it is more appropriate to use mass units to measure it. Because the density of hot water is lower than that of raw water, the mass of hot water with a volume of 1 mL is less than 1 g. Hot water measured in units of mass is equivalent to the same volume of raw water (1 g hot water = 1 mL raw water, too).

For example, suppose you have 10 grams of coffee powder and use the 1:10 ratio of powder to water to brew. If you use a cup to measure 100 mL of hot water, its mass may be only 97 g, which is 3 g (mL) shorter than 100 mL of raw water. As a result, your powder / water ratio becomes 1 mL 9.7. Using an electronic scale to measure 100g of hot water, although its volume may have expanded to 104mL at that time, it will return to 100mL at room temperature, which is exactly the amount we need.

1. Hand punch pot

Hand brewing pot is necessary for hand brewing coffee. When choosing a hand brewing pot, you need to consider "the stability of water flow, the heat preservation of the pot body and the safety of the handle". Different designs of the body and spout of different hands will bring different effects, the first condition is actually suitable for their own hands to hold, with accustomed to better control the flow of water, make delicious coffee.

2. Filter cup

Used to match the filter paper to filter coffee grounds, you can also directly buy the filter cup of the metal filter screen, the advantage is that you do not use the filter paper as a consumptive material, but it is a little troublesome to clean, and there is not enough room to adjust the cooking mode during the operation. Different brands of filter screen thickness will be different.

3. Sharing pot

Can be used to hold coffee, there is a scale to meet their preferences on the line, if not at least need to have a scale, because the powder-to-water ratio is involved.