Preparation Pureé grapes, apples, mint, sugar, vitamin C, and 2 cups wine in 2 batches in a blender until smooth, then strain through a fine-mesh sieve into a bowl, pressing on solids. Transfer pureé to a pitcher and stir in remaining wine. Chill, covered, at least 2 hours. Serve over ice. Cooks' notes:•Vitamin C (ascorbic acid) is also available in powdered form at pharmacies and natural foods stores. It will keep the sangria's color bright. •Sangria can be chilled up to 1 day.
Preparation Pureé grapes, apples, mint, sugar, vitamin C, and 2 cups wine in 2 batches in a blender until smooth, then strain through a fine-mesh sieve into a bowl, pressing on solids. Transfer pureé to a pitcher and stir in remaining wine. Chill, covered, at least 2 hours. Serve over ice. Cooks' notes:•Vitamin C (ascorbic acid) is also available in powdered form at pharmacies and natural foods stores. It will keep the sangria's color bright. •Sangria can be chilled up to 1 day.