- 2 cups chilled seedless green grapes (about 3/4 pound)
- 1/4 cup superfine sugar
- 1 1/2 tablespoons fresh lemon juice
- 2 cups chilled seedless red grapes (about 3/4 pound)
- 1/4 cup superfine sugar
- 1 1/2 tablespoons fresh lemon juice
- 2 cups chilled black grapes (about 3/4 pound), halved and seeded
- 1/4 cup superfine sugar
- 2 tablespoons fresh lemon juice
- Making 1 sorbet at a time, in a blender purée sorbet ingredients until sugar is dissolved, about 3 minutes, and pour through a fine sieve into a bowl, pressing on solids. Discard solids and freeze each sorbet in an ice-cream maker.
- Transfer each sorbet as made to an airtight container and in freezer harden until firm. Sorbets may be made 1 week ahead and kept frozen, covered.
- Using a soup spoon, scoop sorbets, alternating flavors, into 8 parfait glasses.