There are some techniques for choosing a hand -coffee pot:
1. Forging material for coffee pots Because the temperature will affect the dissolving speed of the soluble substance in the coffee powder, in the brewing process, generally we do not want the water temperature in the hand to flush the pot. Therefore, a good hand rushing pot must have a certain heat preservation effect. At least in the 2-4 minutes of brewing coffee, try to control the temperature difference between the water to about 2 degrees Celsius. 2. The capacity of the hand -coffee pot Before the water injection operation, most of the hand rushing pots need to add water to more than 80 %, so it is best not to exceed 1 liter when choosing a hand to rush the pot. Otherwise It will affect the control of water flow. It is recommended to use 0.6 ~ 1.0L hand punching pot. 3. Wide -wide bottom bottom During the brewing process, the water in the hand punching pot will gradually decrease. If you want to control the water pressure stably, and then stabilize the water flow, the hand rushing pot requires a wide pot that can provide the corresponding area. Stable water pressure can help coffee powder roll evenly in the filter cup. 4. Design of the water outlet pipe Hand -coffee uses the impact of the water column to achieve the extraction effect. Therefore, the hand -built pot must be able to provide a stable and uninterrupted water column. Therefore, the thickness of the water pipe is very particular. Good control; too detailed, there is no way to give greater water flow at appropriate. Of course, for beginners and enthusiasts, choosing a hand punch pot that can keep the water flow can also be appropriately reduced to brewing errors. However Small hand rushing the pot. 5. The design of the pot If the design of the water pipe affects the thickness of the water flow, the design of the pot mouth affects the shape of the water flow. In order to reduce the chance of eating the coffee powder in the filter cup, the water column generated by the hand in the hand must have a certain penetration. This requires the design of the water outlet of the pot mouth to be wide, and the shape of the end of the tail section must be sharp in order to form a thick and down, penetrating water column. At the same time, in order to allow the water column to provide a stable penetrating power, the design of the pot can also ensure that the water column is kept 90 degrees with the water column when the water injection. It is easier to form this kind of water pillar's pot with thin mouth pot and peaceful mouth pot. Of course, the crane pot and the duckbill pot are also available, but it requires superb control skills. Therefore, it is recommended that novices can start with a thin mouth pot first. According to the experiment, the general coffee pot mouth is used to give water with dripping water, forming water droplets, the weight is concentrated at the bottom, and it has a certain impact when contacting the powder. Uniform probability. However, the duckbill pot can form water droplets when out of water. Compared with water droplets, water droplets are a uniform ball, which can spread out uniformly when contacting the powder layer. 
