Judgment of ESPRESSO powder quantity of espresso coffee according to espresso powder quantity

Espresso is a mainstream coffee form now. Its mellow and rich taste fascinates many people. The brewing method is to extend the skill of the French press pot to the machine. It is also necessary to fix the amount of coffee powder and water first. However, the container is changed from the French press pot to the filter cup in the hand. Therefore, how much coffee powder should be put in the filter cup is the focus of Italian brewing. The machine will provide fixed brewing water pressure and water volume. Therefore, the amount and thickness of powder will directly affect the flow rate. When the flow rate is not stable, the extraction rate can not be improved relatively.

First of all, we have to work hard on the amount of coffee powder. At the beginning, we can first observe the filter cups of the machines we use. The filter cups on the market will have different shapes and capacities due to different brands. Generally, the common ones can be divided into wide caliber and narrow caliber, and the caliber has size such as 53mm, 55mm and 58 mm. Usually, the filter cups with narrow caliber are deeper, and the filter cups with wide caliber will be shallower. This difference is mainly affected by the design of the brewing head of each coffee maker, but the amount of coffee powder that can be filled in each filter cup is actually the same.

The filter cup of the same caliber can be divided into single (single) and double (double) types, the amount of powder that can be filled in a single portion is about 7-8g, and the amount of powder that can be filled in a double portion is about 16-18g. At this time, you need to pay attention to the depth of coffee roasting, because the depth of roasting will affect the weight of coffee particles, for example, deep-roasted coffee beans evaporate more water, so for the same filter cup when filling, you will need more powder, and vice versa.

The concave line shown in the figure refers to the position of the brewing head in the filter when the handle is locked. Therefore, the amount of powder should not exceed this concave line, and it is based on the height after filling.

Figure [Appropriate powder amount] After filling the appropriate amount of powder, the horizontal position of the powder cake after filling will just fall in the depression of the filter cup, basically not exceeding the main position, and the handle is easy to fasten to the middle after installing the machine. Because the handle is designed as a knob, just like a screw, the lock angle is different, and the distance between the filter and the brewing head is different. In this way, it will indirectly affect the brewed coffee. If the handle is not locked in the middle position, Please find the best position to lock and fix it.

Figure [Too little powder]

When the amount of powder filled is too small, and the water bottle of the powder cake is less than half after filling, the pressure resistance will be relatively low due to insufficient thickness of the powder cake.

Picture [Too much powder]

When filling too much powder, the cake level will be higher than the concave line of the filter cup after filling, and when locking the brewing head, the handle will not be able to pull into position.

Figure [Excessive Powder]

Pulverizing handle of bean grinder

It is a very basic spring structure, the principle of powder stirring is to drive the powder into the handle by driving the powder divider.

The grinder's cutter disc is driven by a fixed motor speed, so when the motor rotates, the cutter disc also begins to bring coffee beans into and grind, and when the coffee powder falls at a fixed amount, if the powder grid is also rotated at a fixed frequency, then the amount of coffee powder allocated will be the same, so that the powder handle will be fully dialed, which becomes the first point to pay attention to.

complete

The so-called complete is to make a spring switch, we can pull the powder handle to the end and put it to the end, when you hear the sound of the spring switch, it means that the handle has been fully toggled.

At the beginning of the action, first slow down the speed of the powder, confirm that each time the powder is completely done, and then slowly speed up, when speeding up, also pay attention to whether the powder is complete, if not dialed well, it will occur that the powder compartment stops, and until the next time the spring is really stuck, the powder compartment will start to move, and at this time it will be found that the amount of powder will be more and less, and cause errors in judgment, so pay special attention to this action.

When the frequency of the powder is stable,

Start paying attention to the direction and amount of powder falling into the filter cup

When you start to stir the powder, you can find that the faster you stir the powder, the powder will always float to the left due to the force. When the speed is slower, the phenomenon of floating to the left will be reduced. However, please note that when the powder stirring force and speed are fixed, the phenomenon of powder floating to the left will be fixed. In this way, the amount of powder will be observed accurately.

When the above observations are skilled, start to put the handle on the handle frame of the bean grinder, start to stir the powder, and observe the position of the powder falling on the handle filter cup. Before opening the bean grinder, first think about the position of the handle to be placed. After placing it, start the bean grinder, start the powder, and find the appropriate position of the handle, and fix it.

When the coffee powder reaches a certain amount, turn off the grinder, do not do any action, and place your hand on the table. Repeat the previous action, dial the second handle, please pay attention to the previous residual powder to the handle, so as to keep the consistency of the bean grinder, please remember to dial down the frequency like the previous handle.

After dialing, put the two handles side by side and observe the stacking condition of the coffee powder. If the stacking condition is different, it is necessary to check whether the frequency of dialing powder is consistent, or whether the handle is placed in a fixed position.

When the stacking condition is practiced to be stable, you can put all the ground coffee powder into the handle. At this time, you should pay attention to the technique to be fixed. No matter how you strike or beat, the number or strength is the key, because it will affect the judgment of the amount of powder. When the amount of powder is too much or too little, as long as the time of the bean grinder is extended or shortened.

The final step is the whole powder action, which is also the final key to confirm the amount of powder, this time you can stack the higher place to push the gap, in the whole powder process, how much coffee powder will be squeezed down, so no matter what method or appliance is used, as long as the method is fixed, you can reduce the error, once the way changes, the stacking situation may be different, so you have to look back to see whether the frequency of powder or the position of the handle is fixed.

When practicing the amount of powder judgment, in addition to the factors of the bean grinder, we can understand that the fixed powder method and force are the biggest factors affecting the amount of powder. If the powder force is fixed, the scattering condition when the coffee powder falls will be minimized. In the powder, it is to a fixed force to fill the filter to a certain extent, at the end of the powder, observe the powder position, if the position is left, the handle will first move to the left, and then repeat the previous action, then we will find that the fixed powder force, will let the powder fall position fixed.