Ginger gives this cooler a little kick, and it gets its pretty color from blood orange juice. You can also use regular orange juice. Garnish glasses with a blood orange slice, if desired.
Combine first 5 ingredients in a blender; process until smooth.
Pour mixture into an 8-inch square glass or ceramic baking dish. Cover and freeze 2 1/2 hours, scraping with a fork every 30 minutes until mixture is fluffy.
Spoon orange mixture into 4 serving glasses. Top each with 1/4 cup sparkling water. Serve immediately.
Cooking Light Chill
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