Washington Red Proprietary Blend: “There's a level of mystery and intrigue when it comes to drinking a wine for which you're not fully informed about, and if that sounds like a thrilling idea to you, then you're probably already interested in proprietary blends. While the concept doesn't have a legal definition, it is used to describe blends whose components aren't disclosed by the producer. In many cases, the wine tends to be a Bordeaux-inspired blend, but this isn't always the case.”