Can't Tell Whether a Wine Bottle Has a Plastic Cork or Real Cork? There's an App for That!

One of the most frequent requests I get is for a list of wines with natural cork stoppers because most of the time it's impossible to see what kind of cork a bottle has without opening it up.  When I first started this project, I began keeping a list of wines and what kinds of closures they had, but I quickly realized how futile that exercise was.  There are so many brands of wine, using different closures for different varietals, and sometimes changing their packaging with new bottlings.

So...