Zabaglione is a delicious light Italian desert typically made with Marsla wine. This recipe uses Limoncello which is a lemon flavored liquor produced in the southern part of Italy. True Limoncello is made from the Sorrento lemons that grow overlooking the Mediterranean. Use the very best Limoncello you can afford, Pallini or Caravella brands are suggested. This recipe comes from epicurious.com. I am posting for ZWT 7 Italy. You can make your own double boiler by using a heatproof bowl suspended over simming water; making sure the bottom of the bowl does not touch the boiling water directly.