A barista could not live without a tamper. When making espresso, compressing the coffee in the portafilter is really important. The coffee should be properly compressed with a force of about 20 kg. If you don't know what such a weight looks like, just place a home scale on the kitchen table and lean on it with a tamper in your hand, so that you can get a feel for how hard you need to press to get up to 20kg of exertion. If you don't press the coffee enough, the espresso will flow out too fast, and conversely, if you compress the coffee too much, the espresso will flow out too slowly.
We definitely recommend metal tampers; they are heavy and working with them is feels very luxurious and tactile. The Tamper Kaffia button excels with its heavier weight of 500 g.
The Kaffia button tamper handle is equipped with an adjustable ring that presses on the top of the portafilter, thus limiting how deeply the tamper can be pressed- an easy fix to the aforementioned consistency problem. Adjusting the depth is quick and easy.
When buying a tamper, it is important to know the diameter of the lever of your coffee machine. This Kaffia tamper has a diameter of 57 mm.