Line 4 small bowls with cake
slices. Thaw the ice cream a little and distribute a layer of ice
cream over the cake. Whisk the egg whites; mix them with the sugar,
the crème fraîche and the pieces of fruit. Spoon this mixture in the
cups and close off with another slice of cake. Put them in the
freezer for 6 hours; turn them on plates before serving.
The Worldcook website has yet
another recipe for cassata ice cream.