Cork or screwcap: what should you compare?

A screwcap does not rule out ageing. Ageing potential depends on the wine; the closure alone cannot set a drinking date.

Before buying for the cellar, look for producer advice for the exact wine. Record vintage, purchase date, storage and a planned tasting date; revise after opening the first bottle.

When comparing closures, avoid also changing grape, vintage and region: you could not isolate the reason for differences. Without comparable versions, simply describe each bottle’s condition.