Formal Coffee is based on the small coffee berry or nut that has become the second most traded product next to oil.
Coffea arabica is the kind of coffee that was the first to be taken for cultivation. The berries and especially the kernels contain the invigorating substance caffeine .
Piston coffee is made by pouring hot water (not boiling about 92-96C) over coarsely ground coffee into a piston can; After a while (3-5 minutes), a piston is lowered so that the coffee grounds are separated from the liquid. It should be noted, however, that the coffee grounds will foam up under this brew.