Fresh Cap is an innovative cap designed by Carlsberg to reduce oxidation via an oxygen scavenging compound inside the liner of the cap. This results in less oxygen in the bottle, because the cap actively absorbs the gas, removing it from the head space. The reduction of flavour oxidation ensures that the beer tastes fresher for longer, it says . The solution promises up to a 15% longer freshness period compared to other conventional caps on the market, over the full shelf life of a product. While it is known as Fresh Cap in several markets, in Vietnam it will be called the ZerO2 cap, where it has been introduced on Carlsberg Premium Smooth Draught – one of the company’s key products in that market.