I’m suggesting you go out and buy Concord grapes today. They’re in season, and eating them is the closest you’ll ever feel to eating a grape that tastes just like grape jelly (maybe you find that intriguing). They’re extremely juicy and grape-y and tart/sweet. They pop in your mouth and stain your tongue. They are delicious and addicting. I found my bunch of grapes at the Greenmarket in Union Square.