Foamy Pineapple Punch 1 (48 ounce) can chilled pineapple juice 6 tablespoons divided lemon juice Ice cubes 1 (750 ml) bottle chilled champagne For each serving, measure into blender, 1 cup pineapple juice, 1 tablespoon lemon juice and 1 cup ice cubes. Whirl until foamy. Pour into glass and add 1/2 cup champagne.