Chilled Grape Soup

Photo by Romulo Yanes
The gelatin in this refreshing dessert soup sets just enough to give it body but not bounce. All kinds of grapes work beautifully as garnishes for this soup; it's worth seeking out unusual varieties, however, for the extra character.
Cooks' notes:
· Soup (without grated zest and grapes) can be chilled up to 12 hours. Add zest and grapes just before serving. · A metal spoon is the correct tool for stirring gelatin; a wooden one might transfer oils, and a whisk might incorporate tiny bubbles.
