Do you have a question for Dr. Vinny? Ask it here...
Dear Dr. Vinny,
Why does this wine have a screw-on lid, rather than the traditional cork?
—Sheila, Greensboro, N.C.
I’m a fan of twist-offs, which are easy to open, easy to re-seal, recyclable and never crumble in my hands. Many producers have switched over to screw caps and other non-cork closures as a way to ensure quality and reduce the possibility of contamination with TCA (the chemical compound 2,4,6-trichloroanisole), which can make its way into a bottle via the cork and cause unpleasant musty, damp notes in a wine.
You’ll see twist-offs topping all types of wine from affordable, everyday quaffers to some very high-end, ageworthy wines. Often folks ask how to store bottles topped with a screw cap, and the answer is, any way you want.
Learn from the experts and get the most out of each sip. Take one of our online courses or take them all—from the ABCs of Tasting to in-depth seminars on Food Pairing, California Cabernet, Bordeaux, Tuscany, Sensory Evaluation and more.