Several small grape clusters
1/2 cup pasteurized egg whites (available in cartons in the grocery-store dairy aisle)
Granulated sugar to coat.
Wash and dry a bunch of grapes (make sure the bunch has plump grapes that are firmly attached).
Snip small clusters of grapes off the bunch and set aside.
Beat pasteurized egg whites with a fork until small bubbles begin to form.
Using a small brush, paint a cluster of grapes with egg whites.
Place grapes on a layer of sugar, then shake a thick coating of sugar over the cluster through a sieve.
Shake off excess and set the cluster on a rack.
When egg whites have dried, use frosted clusters as edible garnishes.