Temperature-controlled [ food and ] beverage dispensers, and structural components thereof that use insert gas to dispense the liquids, said dispensers preventing oxidation, and being washable, reusable, disposable and sanitary in that the closed systems comprising the dispensers prevent the introduction of contaminants; apparatus in the nature of a spout comprised of control valves for controlling liquid and a locking mechanism in the nature of an electronic lock, said apparatus allowing for ventilation of liquids and foods, the purging of unwanted gases, the pouring of liquid and a puff function to clear said liquid, the foregoing apparatus sold as a component part of the temperature-controlled food and beverage dispensers