Ingredients:

• 1 1/2 cups sparkling wine or Champagne
• 1 cup white granulated sugar
• 1 tablespoon light corn syrup
• 1 teaspoon lemon zest and/or grapefruit zest
• 1 1/2 cups fresh grapefruit juice
• 1/4 cup fresh squeezed lemon juice (Meyer if you have access to them)