originally posted by Oswaldo Costa:
originally posted by Mathew Mauricio:
Does the same thing apply to bottles with screw cap closures?
No. While there is no ambivalence here about synthetics - they let too much air in, too soon, and kill the wine in something like three to five years - screwcaps generate a lot of ambivalence. Some people here like them, some don't, but nobody thinks they let too much air in. If anything, screwcaps are accused of not letting enough air in, so wine that is bottled in a reduced state (or, some claim, that becomes reduced because of chemical changes that occur in bottle) remains reduced.
Part of the problem is that nobody knows what is the ideal rate of oxygen ingress. It may be zero, or merely very close to zero, and that difference can be critical. If it's zero, then screwcaps could be the ideal closure. If it's very close to zero, an airtight screwcap would be inadequate for the kind of aging that a pristine natural cork allows. If the ideal rate of ingress were known, then a screwcap could be designed that would allow that, but the ideal rate, itself, could be a fiction, since differente grapes/wines/vintages would all presumably have different optimal rates.