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Bruce Ewert
 
March 25, 2021 | Bruce Ewert

The Case for Cork

We have used cork closures for our organic wines since we established our Wolfville winery L'Acadie Vineyards in Gaspereau Valley. They fit our organic ethos of natural, sustainably harvested and recyclable. They also provide a small measured dose of oxygen to cellared bottles for ideal aging, and our library releases of 10 year old sparklings and whites have reflected that care, rewarding our customers with complexities and unique experiences. But there has always been the spectre of possible cork taint caused by a chemical produced by natural cork microbes, TCA (trichloroanisole). Cork taint affects about 2-3% of bottled wine on average according to Wine Folly, lower if you purchase high end corks like we do, but new technologies are lowering that number even more for TCA free wines.

Our cork supplier, Amorim Cork, revealed their new anti-TCA technologies early this year and we couldn't be more excited. They produce about half of all the corks in the world and have introduced thermal, pressure and carbon dioxide processes in parallel with effective screening to claim that their TCA levels are less than the sensory threshold of 0.5 nanograms per litre (ng/l) wine. In fact the production batch being shipped to us now has been tested at 0.05 ng/l !! This is good news for us and our customers as we start another bottling season and prepare to disgorge a special 10-year tiraged sparkling for our wine club members.

Wines not intended for aging theoretically do not need a natural cork for their evolution. We have decided to use screwcaps this year for Rose and our first release of Tidal Bay. Several considerations went into this decision and our first most important question was answered with approval from our certified organic inspector. These are early-release Nova Scotia wines and Rose has been selling out every year and we expect Tidal Bay to be as popular. We are joining a family of Tidal Bays from other wineries in Nova Scotia and most are using screwcaps for ease of opening and re-sealing between sips. 

 

Comments

Nisha's Gravatar
 
Nisha
@ Apr 3, 2021 at 4:12 AM
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