A mixing nozzle (1) for mixing a concentrate and a diluent and dispensing the mixture is disclosed. The mixing nozzle includes: a concentrate conduit including a concentrate inlet port (2) and a concentrate outlet port (3) and a concentrate flowpath (4) therebetween, the conduit defining the longitudinal axis (XX′) of the mixing nozzle; a toroidal chamber (5) around said concentrate conduit having a water inlet conduit (6) tangentially disposed with respect thereto to create a swirling of the water in said chamber, said toroidal chamber presenting multiple openings (7) at the bottom wall of the toroidal chamber to create multiple flows of diluent around the concentrate outlet port (3); an assembly of multiple radially projecting ribs (10) provided downstream to the multiple openings (7) of the toroidal chamber, the ribs being curved at their downstream ends (10a) towards the mixing nozzle longitudinal axis (XX′).