VinPerfect, a California-based company specialized in wine closures, has introduced a new screw cap liner (gasket) that has oxygen permeability similar to the “average” cork. The company said that until now, winemakers have had to treat every bottle with a cork closure as a roll of the dice, both in terms of possible cork taint contamination and how that particular cork will allow the bottle to age. While corks admit small amounts of oxygen, they do so at highly variable rates. On the contrary, VinPerfect will offer a choice of discrete and consistent oxygen rates, which allow winemakers to be confident that their wine will be consumed as intended