Abstract: A system and apparatus for the production of sparkling wine or other similar beverages by applying carbon dioxide to wine already bottled. Specifically a new and improved high pressure cap-type enclosure for the bottle permits the carbon dioxide to be applied through the cap with an applicator in the nature of a hypodermic needle.Upon removal of the applicator the cap self-seals itself at a high pressure and retains and holds for an indefinite time the carbon dioxide. An exact pressure of carbon dioxide is applied to the bottled wine in an amount that closely approximates the pressures of champagne. The sparkling wine may thereafter be aged without deterioration of the cap and hence without loss of pressure.