How to make a cup of hand-brewed coffee

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The correct steaming method of hand-made coffee

Stuffy steam

In English instructions, it is often expressed as Bloom, which refers to the preparatory action of wetting a small amount of hot water evenly on the surface of coffee powder before formal water injection during hand flushing.

There are two purposes of steaming:

First:

In order to release the gas in the coffee particles, it is mainly carbon dioxide. Generally speaking, the closer it is to the baking time, the more bubbles usually occur during prepreg. On the other hand, the coffee beans with deeper roasting degree will release more gas in the steaming process than the coffee beans with lower roasting degree because of less water content.

Second:

If the coffee particles after exhaust gas can be evenly absorbed and saturated, the subsequent extraction can be uniform. In short, during steaming, the air between the coffee powder particles expands and releases a large amount of carbon dioxide, while a short gap layer between the coffee powder particles will provide the space needed for hot water to pass through the powder layer during formal water injection.

If the initial step of hand flushing is less steaming, a large amount of hot water will follow a local and a small number of waterways through the powder layer, so that the dripping time will be longer, which may lead to excessive extraction, because the extraction time is longer and more substances are dissolved. the taste may be more sour and irritating, or full of miscellaneous taste. However, once you can pay attention to the action of steaming and then start formal water injection, the hot water can pass through the filter layer evenly composed of coffee powder, and then achieve the purpose of uniform extraction.

The following points will be conducive to the smooth achievement of steaming:

Before steaming with water, make sure the coffee powder is as horizontal as possible in the filter screen or filter paper.

When steaming, the force of injecting water is not too strong, gently.

The amount of water used in steaming should be 10% of the total water. For 240 milliliters of coffee, the amount of water needed for steaming is about 24 milliliters.

In the process of steaming, there is as little extract as possible; when there is too much extract in the kettle, the amount of water injected should be reduced, or attention should be paid to the degree of grinding.

The steaming time is about 30 to 60 seconds. When the expansion of the coffee powder surface is over and the surface is about to shrink, it means that the steaming is complete and the first water injection can be started.

In an ideal steaming process, the coffee powder will slowly expand in the presence of hot water, as if the coffee powder keeps pushing the hot water to the top. At this time, the surface tension of the water and the pressure caused by the carbon dioxide released by the coffee powder add up to the gravitational acceleration of slightly larger water and the downward pulling force caused by capillarity. The best end time of steaming will be the sum of the surface tension of water and the pressure produced by carbon dioxide released by coffee powder when the expansion reaches the limit, which is slightly equal to the downward pulling force and stable water injection speed caused by the gravity acceleration of water and capillarity. at this time, the void layer in front of the coffee powder particles has not yet collapsed, so it is a good time to start the first water injection. Although the longer steaming time may get a thicker taste, it is also easy to affect the cooking results because of the larger surface area in contact with the air and the rapid decrease of water temperature.

Whether a cup of hand-brewed coffee has a pleasant flavor depends largely on whether a good filter layer is formed, except for the nature and freshness of the beans, while steaming will determine whether the hot water can pass evenly through the coffee powder. In Bloom is not only the prelude to coffee extraction, but also one of the key steps that can not be ignored in coffee extraction.

The water temperature of hand-brewed coffee is very important. If the water temperature is too high, the coffee will have a bitter taste. If the water temperature is too low, the aroma of the coffee will not volatilize. What is the suitable water temperature? It is the hot water between 90 °and 92 °, which is the most suitable. Like tasting tea, if the temperature of the coffee cup is too low, it will lower the temperature of the coffee and affect the taste, so if you want to make a good cup of coffee, the cup warming process is also essential.

It should be noted that during the whole process, try not to touch the coffee beans with your hands, you can use spoons and so on. In addition, the thickness of hand-ground coffee is also critical, which will directly affect the taste. In the process of grinding, boiling water is hung by the side, and the coffee powder is ground. The water temperature can basically reach the standard, and the next step can be carried out: warm the cup. Then pour the coffee powder into the filter pot, the flushing process is the most important, must be slow, and start in a small circle.

Gradually large circle, the water flow is thin and continuous, if filled, stop for a while, and then carry out the above flushing operation. This process is called two-stage stewing. Don't wait for it all to drain, just lift the filter pot and set it aside. Because the last part of the filter pot will be very bitter. At this time, we see that the coffee soup, if the coffee beans are moderately roasted, will appear amber, while the lightly roasted coffee beans will be lighter in color.

On the contrary, the deep-roasted coffee beans will show a darker color. If you really don't have time to enjoy this slow-paced beauty and want to make coffee with an authentic hand, the editor will take out the artifact: coffee hanging earbag, interested friends can learn about it, it's especially easy to carry, just hang it on the coffee cup. Put your favorite coffee powder in your earbag.

If you don't have time to grind it yourself, you can buy it in a coffee shop. Its brewing method is the same as the method of hand-brewing coffee just introduced, turning slowly and carefully, and then staying, so that the coffee powder is fused with carbon dioxide, and then continue to inject water slowly. Need to pay attention to the amount of water, too much is light, too little is strong, need to adjust according to individual taste.

Another wonderful use of earbags is to make iced coffee, or cold extracted coffee. Before going to bed at night, put the earbag in the coffee pot, soak it with an appropriate amount of water at room temperature, and place it in the freezer for more than 8 hours. Early the next morning, you can have a cup of fragrant cold coffee. A beautiful morning, let yourself stretch, stretch all over the body, make yourself a nice cup of coffee and smell the aroma of the coffee.

Your heart will unconsciously settle down, and every day is a good start. It can also be in the afternoon after most of the busy day, or in the tea room, or in front of the floor-to-ceiling window, holding a cup of pleasant coffee in your arms, close your eyes and feel your heart with your heart. It will be very full at this moment. Only when you really establish a connection with your heart, can your energy be truly released.

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