This tart Italian cocktail—comprised of just two ingredients—can be mixed before serving or served as a layered drink for guests to stir themselves. More Recipes for a Cocktail Party
Pour the saba into a flute. Carefully add the Prosecco without disturbing the saba. Stir in the saba just before drinking.
Saba, the Italian condiment made from reduced grape must, is available at specialty-food stores and by mail-order from igourmet.com and gourmetsardinia.com.