Device for producing a frothed liquid comprising a chamber 13 opened to atmosphere with a transverse bottom wall 14 and a longitudinal upward wall 15, at least one diluent inlet 18, at least one liquid delivery outlet 20, wherein the diluent inlet is provided through the upward wall and is dimensioned and oriented for directing a thin jet of diluent in the chamber, and wherein the at least one liquid delivery outlet is configured in the bottom wall for liquid to rise up along the side of the upward wall by the jet of diluent entering the chamber as a result of the direction and dimension of the diluent inlet in the chamber.