While sipping wine is not usually associated with Transylvania, it is an experience worth pursuing if you have the chance. In general Romanian Vineyards are becoming more and more open to visitors. The cellars might need some dusting, but the wines are quite tasty and are helpful for learning to communicate in Romanian.
It can be difficult to find Romanian wines outside of Romania. As the guide at Cramele Recas explained, Romanians don't like to export their wine, they like to drink it themselves!