A foamed liquid dispensing system includes a container for receiving a liquid to be dispensed connectable to, and removable from, a gas charging unit. The gas charging unit includes a gas compressor, gas pressure sensing means, a control unit and a user interface. The user interface permits a user to input a desired final gas pressure from a minimum value to a maximum value in discrete steps. The control unit instructs the gas compressor to charge the container with gas to the desired final pressure. The gas pressure is continuously monitored and the flow of gas into the container is stopped once the desired final gas pressure has been reached. The user interface displays the gas pressure in the container as the charging cycle proceeds. Once charged with gas and removed from the gas charging unit, the container substantially retains the final desired gas pressure until the liquid is dispensed.

Tap (1) for dispensing a first liquid and/or a second liquid, the tap comprising: a first inlet (11a) and a second inlet (11): a first outlet (12a) and a second outlet (12b): a handle (10) adapted to rotate around a centre point (100) so as to be placed alternatively in: a first open position corresponding to a rotation of the handle (10) of a first angle (a1) with respect to a vertical reference axis (101) passing through said centre point, or in: a closed position corresponding to a rotation of the handle (10) of a second angle (a2) with respect to said reference axis (101), or in: a second open position corresponding to a rotation of the handle (10) of a third angle (a3) with respect to said reference axis (101), wherein said first liquid flows through the first inlet (11a) and the first outlet (12a) when the handle is at its first open position, through the second inlet (lib) and second outlet (12b) when the handle is at is second open position and wherein both first and second liquids are prevented from flowing when the handle is at its closed position, and wherein the tap comprises a distribution unit, said distribution unit being arranged so as to allow said handle to spontaneously reach said closed position in absence of external action.