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Home > Food and Beverages > Wine > Cork Verses Screw Cap Debate
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Cork Verses Screw Cap Debate
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For a very long time, cork was the preferred method to seal a bottle of
wine. There has been much debate over the past few years as to what the
best method is for sealing off a bottle, cork, plastic cork or screw
caps.
Current estimates predict that roughly 6 percent of all wine bottled
with a traditional cork will fall victim to TCA
(2,4,6-Trichloroanisole), a bacteria that thrives in cork. Some of you
might have even had a spoilt bottle of wine and not really noticed it.
Even a very small amount of TCA in a bottle of wine can ruin it. Most
become aware of TCA in quantities as small as 5 parts per trillion.
When TCA is present in quantities high enough to be evident to a
person, it comes across as 'musty' aromas and flavors. TCA in wine is
not toxic, but the taste and aromas can be quite unsettling.
Another issue that seems to have people leaning away from traditional
cork is the fact that cork can dry out and allow air to oxidize a
bottle of wine. This can happen if a bottle is not stored correctly.
Storing a bottle of wine on its side helps a cork remain moist and a
moist cork expands better to seal the inside of the bottle. A dry cork
shrinks allowing air to enter spoiling the wine.
Plastic corks have been created to help combat the problems being seen
with real cork. Plastic does eliminate the problem of TCA, but plastic
corks can have leaky seals which cause oxidation. Personally I have
never had a problem with a leaky plastic cork, but it does happen.
Another problem with plastic is that they can be very difficult to
remove from a bottle compared to cork. Though this is not as
detrimental as having a bottle of wine ruined with TCA, it can be very
frustrating if you were looking forward to a lovely glass of Chardonnay
and the plastic cork won’t budge.
In an almost last ditch attempt at preventing wine from spoiling, some
wine makers have resorted to screw caps for their bottles of wine. Not
nearly as romantic as the popping sound a corked bottle makes, screw
caps nonetheless are very effective in preventing wine from spoiling.
Most Australian wines are no longer made with cork and have opted for
this screw cap method because it’s better at maintaining the taste of
wine in the way the wine maker intended.
Screw cap bottles of wine are becoming more and more popular, and yes,
while they are not as aesthetically pleasing and continue to hold the
connotation of a cheap bottle of wine, a greater number of higher
quality wines are opting for the screw cap to prevent spoilage. So the
next time you are served a bottle of wine with a screw cap, think twice
before brushing it off as a cheap wine
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