Grapefruit "Creamsicle"

This tart sorbet is great on its own as a palate cleanser, but it tastes even better when paired with store-bought vanilla ice cream. Whichever kind of grapefruit you use—pink, white, ruby red, or yellow—the hibiscus ensures a lovely deep-pink color. If you don't have an ice cream maker, turn the sorbet into a granita by freezing it in a 9x9x2" metal pan and mashing any big chunks with a fork after 1 hour. Freeze for 1 hour more, then scrape until it's as flaky as shaved ice.