Dispenser for producing beverages by dissolution of a soluble ingredient

The invention concerns a beverage production device (10) comprising a first dissolution chamber (1), said first dissolution chamber being configured for producing a beverage by mixing a beverage concentrate and a diluent and comprising: at least one diluent inlet (11a, 11b) and at least one liquid delivery outlet (12), a bottom wall (13), the at least one liquid delivery outlet (12) being set in said bottom wall, wherein the device comprises a second dilution chamber (2), said second dilution chamber comprising: a top wall (21), and at least one liquid inlet (22) through the top wall, said liquid inlet being the liquid delivery outlet (12) of the first dissolution chamber, and at least one diluent inlet (23) configured for introducing a diluent in the second dilution chamber and mixing said diluent with the liquid flowing from the at least one liquid inlet (22) through the top wall.