Place plastic wrap directly on the sabayon's surface to prevent a skin from forming, then refrigerate. When your guests arrive, pull the sabayon from the fridge, and it will be the perfect texture by the time you're ready to serve dessert.

How long can you keep sabayon?

Refrigerate at least 11⁄2 hours before serving. A chilled sabayon can hold up to 24 hours, but it's best served the same day.

How long can you keep zabaglione in the fridge?

Notes. For a zabaglione that will last up to six hours in the refrigerator, add whipped cream. Beat half a cup of heavy cream just until it holds firm peaks. When the zabaglione is done, remove the bowl from the heat and continue beating until it's cool.