Ingredients

• 1 pound green grapes
• 2 small Granny Smith apples, coarsely chopped
• 1/4 cup packed mint leaves
• 3/4 to 1 cup sugar (to taste)
• 1 (500-mg) vitamin C tablet, crushed to a powder with back of
• a spoon (see cooks' note, below)
• 2 bottles dry white wine (preferably Albariño or Pinot Grigio)

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Instructions

1. 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.