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New Technology Spurs Cork Comeback

“While TCA is the most common source of flaws in natural cork, it’s far from cork’s only weakness, and not all winemakers consider a TCA-free cork superior to a screwcap. “We have been using screwcaps … since 2001, and it has been one of the best decisions we ever made,” said Michael Brajkovich, winemaker at Kumeu River in New Zealand. “[TCA] is not the only source of cork taint. Tribromoanisole, guaiacol and geosmin also [cause] problematic aromas that can be derived from corks, and then there are the woodlike characters that are a distraction. Since the change to screwcaps we have totally eliminated any form of these closure taints, and the wines are much better for it.” Brajkovich also said that natural cork is a significant cause of premature oxidation.”

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New Technology Spurs Cork Comeback