A device for dispensing individual servings of a cold beverage, either having a refrigeration unit to chill the beverage or a removable pitcher that may be put in a refrigerator. A special disposable beverage cartridge or beverage pouch fits into the holder. This cartridge or pouch may have pressure rupturable seals or diaphragms and contain beverage concentrate. A dispensing mechanism puts pressure on the cartridge or the pouch to break the pressure rupturable seal or diaphragm to discharge the concentrate into a mixing structure. The mixing structure also receives chilled liquid from the refrigeration unit or the pitcher, and ensures that the concentrate mixes with the liquid without contacting the walls of the mixing structure.