Got this from an email from King Arthur Flour and oh my it sounds good - just listen: This "Creamsicle®" cheesecake features vanilla extract plus Fiori di Sicilia and orange zest, giving it wonderfully bright flavor. It's perfect topped with summer fruit. It recommends 1/4 teaspoon of Fiore di Sicilia in the recipe but Zaar does not recognize and also lemon can used instead of oranges if desired and well as changing the topping to blueberry or even fresh fruit. I got my Fiore di Sicilia from King Arthur but if you choose to make plain vanilla cheesecake, omit the Fiori di Sicilia, and increase the vanilla extract to 1 tablespoon