Tom and Jerry Batter Beat 6 egg yolks for approximately 10 minutes until good and stiff. Pour in 1 pound confectioners' sugar slowly (keeping back 1/2 cup from the pound) and 1 teaspoon nutmeg. Beat until well mixed. Set aside. Beat the 6 egg whites until stiff and fluffy. Add the reserved 1/2 cup confectioners' sugar. Fold the two mixtures together gently. To use, heat 1/2 water and 1/2 milk and pour into heated mugs with a jigger of rum or brandy, a heaping teaspoon batter and a dash of nutmeg. Stir and serve. You can store the remainder in a covered glass container in the refrigerator, but it is not quite as good if left for over 24 hours.