Whether the coffee powder is brewed or brewed, the process of making coffee by hand without looking at it is a treasure.

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Qianjie-step introduction to hand-made coffee

To cook means to squeeze something out or to get an extract. In chemistry, extraction refers to the extraction of valuable substances (flavor) from the raw material (coffee beans). In coffee extraction, the most common is to use hot water to extract flavor from coffee powder. Many substances in coffee are soluble, such as fruit acids, caffeine, oils, melanoids, carbohydrates and plant fibers. The time and rate at which each substance is dissolved is different and has different tastes.

Of these, only 30% of the substances are soluble in water, less than 22% have positive tastes, and the rest will only give coffee extra bitterness, paper or other negative tastes. Fortunately, these positive taste substances are dissolved first, while negative taste substances take longer to extract.

The basic operation steps of hand punching:

1. Folding filter paper: take out a fan-shaped filter paper, one side of which is pressed by the machine, and its edge is thicker. (selection of filter paper: filter paper is divided into size types, according to the selected filter cup, bleached filter paper and raw pulp filter paper, bleached filter paper pulp taste is small, we choose bleached filter paper)

Take out a fan-shaped filter paper, one side of which is pressed by the machine, and its edge is thicker. (selection of filter paper: filter paper is divided into size types, according to the selected filter cup, bleached filter paper and raw pulp filter paper, bleached filter paper pulp taste is small, we choose bleached filter paper)

Fold the thickest side and flatten it; open the filter paper to align the two center lines and press it gently. Do not press the two fan faces into a broken line! Put the folded filter paper in the filter cup

2. Weigh coffee beans: weigh coffee beans 20g (there is a saying that you can use 10g for one cup and 15g or less than 20g for two cups. In fact, it is not in line with the extraction principle. If you want to get coffee with a light taste, you can reduce the amount. But it is incorrect to make two cups of coffee and the coffee beans can be reduced. You can try it yourself. The taste is really very different.)

3. Grinding: hand grinding machine for grinding coffee beans or automatic grinding machine for beans

4. Heating water: it is best to use a thermometer to measure the water temperature to make the water temperature accurate. The water temperature range of hand flushing is relatively large from 82 to 95, but the taste of different water temperatures must be very different. Different beans with different baking degrees require different water temperatures, so you need to adjust yourself to find the most suitable water temperature.

5. Wet filter paper: rinse the hot water evenly on the filter paper, make it all wet, stick it tightly to the filter cup, and then pour out the hot water in the sharing pot. Many people are not used to wet filter paper and think that it is superfluous. In fact, the biggest effect of wet filter paper is three: 1. Flush out the impurities and smell of the filter paper 2. Attach the filter paper to the filter cup 3. Warm filter cup and sharing pot)

6. pour the powder into the filter paper: pour the ground coffee powder into the filter cup and gently pat flat.

7. Stew: evenly pour water on the coffee powder about 1.5 times the number of coffee powder (be sure to pour thoroughly, but do not drop too much water in the sharing pot)

There is no fixed time for stewing. Fresh coffee powder will begin to absorb and expand after filling. When all coffee powder absorbs water, the expansion stops and then the steaming process stops. At this time, you can inject water. (whether the coffee is expanded or not or the size of the expansion is closely related to the baking degree and freshness of the coffee. The fresher the coffee powder is, the bigger the expansion is, and the deeper the roasting is, the greater the expansion is.)

08. Water injection: immersion method: start with water injection from the midpoint, and then draw a concentric circle in one direction to the periphery, but do not rush onto the filter paper, and then draw a concentric circle until the center is so repeated. The current should be stable. Water injection can be divided into two or three times, and many people dispute whether it is divided into sections or not.

Central water injection method: few friends come into contact with this method of water injection, do not know the central water injection method for cooking, the central water injection method only in the center of water injection, but not spread, after extraction will form a small hole, that is, water injection in the whole coffee noodle.

9. Finish the extraction: when the extraction is over, get the coffee liquid about 240ml, finish the water injection, remove the filter cup, and share our delicious coffee in the pot.

Knowledge: the predecessor of HARIO company is Shibata Hiroshi Manufacturing Institute of physical and chemical glass products. In 1964, HARIO Commercial Co., Ltd. was established to sell heat-resistant glass tableware. In 2005, HARIO launched the conical filter cup HARIO V60.

In short: Qianjie is a coffee research hall, happy to share the knowledge about coffee with you, we share unreservedly just to make more friends fall in love with coffee, and there will be three low-discount coffee activities every month. The reason is that Qianjie wants to make more friends drink the best coffee at the lowest price, which has been Qianjie's tenet for 6 years!

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