Preparation

• Preheat oven to 350 degrees. In the mixing bowl of an electric mixer, combine the egg whites with cream of tartar and vinegar and beat at high speed until soft peaks form, about 1 minute. Continue beating, and gradually add the sugar, vanilla and cornstarch. Beat until very stiff, about 2 minutes.
  
  Spoon the meringue in a large pastry bag fitted with a star tube. Pipe 3 inch high mounts on waxed paper. Pick with a wet spatula and drop in a baking pan containing the hot water. Place in the oven for 2 to 3 minutes. Lift each meringue and set aside on a baking sheet. Spoon 2 or more tablespoons of custard in shallow dessert plates. Top each plate with oeuf á la neige. Decorate with fruit. Serve.