Put the green grapes in the freezer about 2 hours before you want to serve your sangria.
Combine the chopped apple, lemon slices, halved red grapes, sugar, wine, white grape juice and vodka in a large glass pitcher filled with ice. Stir to dissolve the sugar. Add the frozen green grapes to glasses and fill with the sangria.
Photograph by Kat Teutsch
Courtesy of Food Network Magazine