There is described a substantially liquid sweetener composition comprising at least 80 wt% of water, from 9 wt% to 12 wt% of sodium cyclamate, from 4 wt% to 6 wt% of " sodium saccharine, from 1 wt% to 2 wt% of potassium acesulfame; the sweetening components of the composition act synergically in such a manner as to increase its sweetening power.