What is the coffee drop method? What should I pay attention to when brewing Japanese coffee?

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The drip water injection method is also called essence extraction: the water flow of drip water injection is weak, which destroys the coffee powder layer as little as possible, reduces convection and increases the soaking time. The coffee made by this Japanese method has high mellowness, high sweetness, rich smoothness and distinct texture.

Because the effluent of the hand punch needs a drop by drop, it is suitable to choose the flattened wide mouth spout or the wide mouth crane spout. The advantage of this kind of hand punch is that the thickness of the water flow is high, and it is more suitable for drip injection. With Kono's tapered filter cup, its ribs stop less than half the height of the filter cup. This design allows the filter paper to be fully attached to the cup wall after water absorption, and the exhaust space is greatly limited. This method is more suitable for moderately roasted or deep-roasted coffee beans.

At the beginning of water injection, we use drip water injection to increase the soaking time, and in the case of low ratio of water to powder, the coffee powder is fully expanded without any miscellaneous smell, and then injected with fine and coarse water to extract the flower and fruit aroma in front of the coffee. the whole process takes about 4-5 minutes.

When a drip is converted into a water column, the speed of drainage is the basis for inspection: careful water injection while observing during the drip process. When it is converted into a small water column and begins to feed a large amount of water, the drainage speed will be proportional to the exhaust of your powder layer.

Therefore, if the exhaust is normal during the drip, even if a large amount of water is given to the small water column, it can quickly pass through the powder layer and will not accumulate in the filter cup. However, if it is obvious that the drainage in the filter cup is very slow, usually the exhaust is not well done during the drip, the frequency of the drip can be re-adjusted next time until the second half of the drainage is normal.

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