Appreciated your feedback.
I understand what you are saying about the ‘influences’ that may occur.
Important to note that carbon footprinting and greenhouse gas emission studies are now assesssed against specific standards.

Cheers , SJ

Thanks for your responses ; at least the dialogue is open.

Re your comments ” Winemakers are certainly familiar with the issue and do take ‘action’ prior to bottling to minimize this potential issue – just as they do potential problems with ANY closure” ; I would be interested to learn more about the action that is taken prior to bottling with screwcap.
Can you enlighten us please ?

Cheers , SJ.

I’d like to comment about your statement re: sulphidic wines under screw caps. The problem was brought to the forefront with the seminal AWRI study – noting that these was an overbearing issue with wines under this closure, and one that needs addressing.

Winemakers are certainly familiar with the issue and do take ‘action’ prior to bottling to minimize this potential issue – just as they do potential problems with ANY closure.

Truth be told that the sulphidic issues that were brought to light in that study were due to faulty winemaking in the first place – not necessarily due to the closure. The wine in question in the study was ‘known’ to have sulphidic issues to begin with that were ‘covered up’ with copper prior to bottling. These issues were ‘unmasked’ with time in the bottle . . .

I have asked and continue to ask not only my colleagues but consumers as a whole if they are coming across systemic issues of ’sulphidic issues’ with screw cap wines, and the answer has always been, and continues to be, no.

This is NOT to say that the problem may not exist – but plase show me systemic examples of it taking place in real world situations . . . I’m all ears.

Cheers!