Wine expert Anthony Giglio is constantly fielding questions about the great grape from amateur drinkers and pro collectors alike. Now you can ask him yours: Tweet it to him at @WineWiseGuy and check back every Tuesday afternoon for the answer.
The answer: Not really. Winemakers—and drinkers—like them for their practicality (no special tool needed), dependability (the seal is better than cork), and ease of use (you don't need to be a pro bartender to open them). Incidentally, if you find yourself on Jeopardy!, the most common brand name for these caps is Stelvin Closures. They may look like the topper on the Boone's Farm bottles of your youth, but they're far more sophisticated. Don't get me wrong—I appreciate the ceremony and romance of pulling the old cork, but I think that cork is best served in bottles that need a couple of years to age, not those we buy to drink right now. Which is the major difference between the two toppers: Cork allows the wine to age and develop further, while the screw cap hermetically seals and keeps it fresh.
—Follow Anthony Giglio on Twitter at @WineWiseGuy.