2. Don't guess on the grapes
Sometimes people who work in winery tasting rooms will try to stump visitors with a question like, “Can you guess what grape this is?” If you don’t know the color of a wine based on the name of the grape, don’t play this guessing game: 50/50 odds do not a Kentucky Derby winner make. The next time you’re asked, don't embarrass yourself by confusing Pinot Noir (red wine) for Pinot Grigio (white wine). Rather, turn the tables and ask your own question: “Can you guess how much money I’m going to spend here?”
Don’t ever announce that you “hate white wine” or “hate red wine”. This is an immediate tip of the hat to any discerning wino who is looking to sniff out the defensive novice. Declaring war on a wine because of its color will warrant a barrage of questions and humorous jabs at your expense from any wine aficionado within earshot. Instead, if you really hate red wine, come up with a good reason, like “my ex drank it” or "I don't drink things that are the color of blood" or “I had a bad experience with red, so I'd prefer to stick to white tonight”. Also, realize that no two red wines are alike. It's time to put those long-held grudges behind you and pick up a bottle of red again.
3. Don't be a grape racist