How to adjust the hand parameters when brewing coffee with different amounts of powder in the same size V60 coffee filter cup

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Guide reading

V600001 filter cup is used to brew 1-2 people's coffee, using 15-20g powder is the most suitable. Some friends will rush less when they can't drink so much alone, and some friends will rush more when they share with their friends. So should we adjust the parameters when brewing coffee with different amounts of powder in a filter cup of the same size?

Cooking experiment

The next step in Qianjie Street is to use Ethiopian Yega Xuefei sun red cherries as the cooking object, with the following parameters: V60 filter cup, 90 ℃ water temperature, powder / water ratio 1 / 15, medium fine grindness (Chinese standard No. 20 sieve pass rate 80%), circle water injection technique, and the amount of cooking powder is 10 g, 15 g, 25 g, respectively.

"the filter paper should be moistened with hot water before cooking, so that it can better fit with the filter cup and preheat the filter cup with the sharing pot. "

Brew 10g coffee powder

The first stage is filled with 20g of water, then steamed for 20 seconds. Then the stage is divided into sections when the water level is about to be exposed to 90 grams, and when the water level is about to be exposed to the powder bed, continue to inject water to 150 grams to stop water injection, and when the water level is about to be exposed, the filter cup is removed, and the extraction time is 1: 35 ".

Cooking flavor: citrus acidity, aftertaste honey, overall insipid, lack of full taste brought by sun treatment.

Brew 15g coffee powder

The first stage is filled with 30g of water, then steamed for 30 seconds.

Cooking flavor: sweet and sour berries as the main tone, fermented aroma, almond aroma, aftertaste with honey sweet, rich layers, full and smooth taste.

Brew 25g coffee powder

The first stage is filled with 50g of water, then steamed for 40 seconds.

Cooking flavor: the bitter taste of almonds, the acidity of citrus, the sense of tea, there is no hierarchical sense, there is a bitter feeling.

From the pictures, we can notice that when brewing 10g coffee powder, due to the small amount of powder, the thickness of the bowl-shaped powder layer after brewing is uneven, and some water flows into the diluted coffee liquid into the sharing pot without fully extracting the coffee flavor, so the coffee flavor is insipid.

When brewing 25g powder, the increase in the amount of powder leads to an increase in the density between coffee particles and a narrowing of the channel of water flow. The impact of the water flow during cooking can not effectively tumble the powder layer, and a uniform bowl-shaped powder layer can not be formed after cooking. The powder layer at the bottom is too thick, prolonging the extraction time, so there is a bitter taste.

And we can also see that when cooking 25g powder, the liquid surface is frantically testing at the edge of the filter cup! If the current is a little careless, the liquid surface will overflow.

How to brew 10g coffee powder with V600001 filter cup?

Adjust the size of the current! In order to ensure that the powder layer can be evenly distributed on the wall of the filter cup when brewing 10g coffee powder, we should choose fine water to brew. Smaller water injection can reduce the powder layer due to the impact of water injection to produce a large tumble, causing the coffee powder to sink at the bottom of the filter cup. How small is the current? In the proposal of Qianjie, the injection amount of fine water is 4-5 g per second, while that of fine water is 7-8 g per second.

How to brew 25g coffee powder with V600001 filter cup?

Adjust the degree of grinding! Since the flow channel becomes narrower because of the decrease in the space between the coffee powder particles, we can thicken the grinding degree a little bit to increase the space between the particles. That's for sure! We can't thicken it by a big margin. The grinding degree selected for this cooking is 80% of the pass rate of the Chinese standard 20 screen, so the adjusted grinding degree is recommended to be 75% of the pass rate of the Chinese standard 20 screen.

But! For No. 01 filter cup, 25g powder is not the size it should bear. If it takes a long time to cook so much powder, Qianjie suggests buying a large filter cup No. 02 ~ only when there is enough space in the filter cup, can you ensure that the coffee powder can be extracted better and more evenly.

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