Easy Frozen Granita

When you're looking for a cool, healthy treat, think granita. Then take a shortcut and enjoy this easy version. The refreshing dessert is typically made by freezing a mixture of sugar, water, and flavorings and scraping it often as ice crystals form. This variation calls for just one ingredient and no scraping. Freeze any juice -- we used grapefruit -- in an ice cube tray; pliable silicone ones are ideal. When solid, pulse 3 to 5 cubes per serving in a food processor until shards form. Serve the granita in a pretty glass. (Or freeze it in an airtight container for a day or two.)