A French press, also known as a cafeti??re, cafeti??re ??Â¨ piston, Cafeteria, press pot, coffee press, or coffee plunger, is a coffee brewing device invented by Paolini Ugo and patented by Italian designer Attilio Calimani and Giulio Moneta in 1929.
Coffee is brewed by placing coarsely ground coffee in the empty beaker and adding hotâ€™???between 93â€™???96 ???C (199â€™???205 ???F)â€™???water, in proportions of about 30 g (1.1 oz) of coffee grounds to 500 ml (17 US fl oz) of water, more or less to taste. The brewing time is about two to four minutes. Then the mesh plunger or piston is pressed, to separate the grounds and hold them at the bottom of the beaker. The mesh piston normally does not compress the coffee grounds, as most designs leave a generous spaceâ€™???about 30 mm (1.2 in)â€™???below the piston in its lowest position. If the brewed coffee is allowed to remain in the beaker with the used grounds, the coffee may become astringent and bitter, though this is an effect that some users of the French press consider desirable.