What do you think of the scale of the hand grinder? what do you think of the rough dial of the bean grinder?

What do you think of the scale of the hand grinder? what do you think of the rough dial of the bean grinder?

From the use of water pump can also be a simple distinction between low-end and high-end coffee machine. Generally less than 5000 coffee machine, the use of vibration pump for extraction pressure, because the working principle of the vibration pump caused by the output pressure is not stable, so the extraction quality is poor. More than 5000 of coffee machines have rotary pumps in some mid-range models (Aibao E61). The high-end machine is the rotary pump all over the world! With the development of pressure swing extraction technology, new products such as gear pump and magnetic drive pump have jumped onto the stage. But the vast majority of the market is still occupied by vibrating pumps and rotary pumps. One of the simplest criteria for choosing a coffee machine on the market is... As long as it is a rotary pump, this machine is certainly not so bad!

The bean grinder used in the Italian coffee machine has to be fine-tuned every day. Generally, there is a median on the Italian bean grinder, which is a relative standard. It can be fine-tuned as needed, and it should be easier to find on the adjusting plate. To make espresso, we usually use 8-10 g powder for single bowl and 14-16 g for double bowl. Other brewing methods do not need to use Italian bean grinder, manual most do not have scale, electric to commonly used little eagle little flying horse is more common, siphon pot is generally 3 degrees, hand 4-5 degrees (depending on the powder thickness of some differences) method pressure 5 degrees, mocha pot 2 degrees, but the relative value should be adjusted according to their own habits and bean grinder conditions. The amount of powder, siphon 10-12g per person, hand flush 12-15g per person plus 8-10g for each additional cup, Mocha pot to fill the powder trough to 89 minutes, French kettle generally 10g per person. The water temperature, grinding thickness, brewing time and powder amount of coffee can be said to be variables in a certain range. Each quantity has a certain controllable space, but after each quantity changes, the other quantities have to change accordingly, so if you really want to master the brewing skills, you can only rely on experience, and it is impossible to become a barista according to this formula.

From the use classification can be divided into commercial machines and household machines, commercial machines without exception have a huge boiler, most of which are 2-head or 3-head or even 4-head structure. Even single-end commercial machines mostly have more than 6L sub-mother boiler design. The household machine is either a low-end heating block or a 2L or so parent boiler. The capacity of the boiler is very small and the working quality of continuous multi-cup extraction can not be maintained. Today, with the continuous progress of manufacturers' technology, there are also some high-end household machines with the design of dual-boiler PID precise temperature control.