We had pickled grapes as part of an appetizer that was served at Teatro ZinZanni. These ones don't taste exactly the same as the ones chef Tom Douglas served there, but they're a tasty addition to a cheese or charcuterie plate. They taste similar to a sweet pickle, only better. I like to mix red and green seedless grapes, but you can use one or the other. I also use Splenda, but feel free to use granulated sugar if you desire. This recipe is adapted from one I found on NPR, which in turn was adapted from a recipe from Seattle's Boat Street Cafe. They are ready to eat after about 8hrs in the brine.