A capsule includes a deformable and/or compressible casing that is provided with a base wall and with a side wall that define a cavity containing an initial product to be combined with a fluid to obtain a final product and with a nozzle provided with a plurality of openings for the passage of the fluid. The nozzle engages an outflow portion of the base wall and is arranged for exiting from the cavity through the outflow portion when the casing is compressed and/or crushed. The nozzle includes a first portion abutting on and sliding with interference inside the outflow portion in a sealed manner so that the final product exits the cavity at least initially only through at least one further opening of the nozzle.