The grapes marinate for at least three hours (up to a day) in a mixture of dry white wine, sugar and lemon zest, and then they're ready to go. After about three hours, the grapes have a subtle wine flavor and extra sweetness, brightened up by the lemon. We assume the wine flavor gets stronger the longer they marinate, but honestly, ours never last long enough to find out.
And then the marinade – don't throw it out! Serve it with club soda for an easy, refreshing cocktail. Garnish with lemon and grapes. Cheers to beating the heat!
(Images: Joanna Miller)