The invention concerns a beverage dispenser (1 ) configured for dispensing in a drinking container (2) a beverage composed of a plurality of layers (2a, 2b, 2c) of beverage components, said dispenser comprising : - a preparation unit for preparing the beverage components (30, 31, 32, 33) and dispensing said beverage components in a drinking container, - a control unit (9) for enabling a user to control the preparation unit, said control unit comprising :. a user interface (10) for enabling a user to select a beverage,. a processing unit for driving the preparation unit in accordance with the beverage selected by the user, wherein the user interface (10) enables the user to choose the vertical order of the layers (2a, 2b, 2c) of beverage components in the drinking container, and wherein the processing unit is adapted to calculate the density (d30, d31, d32, d33) of each beverage component in order to obtain the vertical order of layers selected by the user in the drinking container.