What's the difference between the threaded bottom and the flat bottom of the coffee hammer?
Every barista wants to have his or her own Tamper (or pressing powder hammer), because every time you make a cup of espresso, you have to use a powder hammer to flatten the ground coffee powder so as to improve the extraction quality of the coffee (of course, there are some practices that do not press the powder).
What's the use of the powder hammer? Why can it be so expensive? Why is there a difference in size? Why is there an one-piece pose or a split pose? Why is the base different? How do we choose the powder hammer?
1. About the role of the powder hammer:
The powder hammer has several important functions in making espresso:
The first is to press the ground coffee powder so that hot water can fully penetrate and flow through the coffee cakes.
The second is to keep the gap between the coffee powder consistent, because the coffee powder will begin to expand after absorbing water, which can easily lead to extraction imbalance.
The third is to flatten the coffee powder in the handle to form a flat horizontal plane, so that the coffee powder can withstand the great pressure caused by the coffee machine extraction without being washed away and affecting the taste of the extraction.
two。 Why are there different sizes of powder hammers?
In fact, there are two sizes of powder hammer, the small size is about 49mm to 53mm (4.0cm to 5.2cm), and the large size is from 57.5mm to 58.5mm (5.75cm to 58.5cm). The difference in specifications is mainly due to the problems of household Italian machines and commercial coffee machines.
Large powder bowls are used all over the business, and each coffee maker company has its own size, so there is a situation between 57.5mm and 58.5mm.
Generally speaking, the manufacturer of powder hammer will be in 58mm, on the one hand, it is convenient to produce, on the other hand, the cost will be relatively low. If you ask for a more refined size, the cost and technology will also increase, so the price will vary from dozens of yuan to 300 yuan. And the powder hammer will also go with the company's products.
Brand, powder hammer shape, material, weight, design or limited edition and other influencing factors increased.
Well, from the above two main points, we can see that the main function of a powder press is to flatten and tamp the coffee powder. We can understand that the powder press has become a bridge between the barista and the coffee machine.
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