Some wine experts don’t believe in screw cap closures. Why?
Critics of screw cap closures claim that the bottle ageing characters that we see in a cork sealed wine are completely lost and thus the wine does not develop fully secondary flavors. Put simply, critics feel that cork is the best closure, because over time it allows a minimal amount of oxygen to enter the bottle and react favorably with compounds such as acid, tannin, alcohol and phenolics. Screw cap fans argue that this secondary flavor also develops in wine closed with a stelvin enclosure, but it may take longer, thus extending the life of the wine quite considerably. More importantly, they claim the risk of cork taint is eliminated.
