Recipes Fernet & Jerry Be the first to rate & review! When John Gertsen learned that Italian immigrants sometimes mix an obscure Sicilian bitters with eggnog as a kind of tonic, he had to try it. He substituted widely available Fernet-Branca for the bitters. The result? "The rich flavor of the egg takes the edge off the Fernet-Branca and the heat makes it smell heavenly." By John Gertsen Updated on March 27, 2015 Print Rate It Share Share Tweet Pin Email Yield: 1 drink Ingredients 2 ounces Tom & Jerry Batter 1 1/2 ounces Fernet-Branca (bitter Italian digestif) 1/2 ounce Cognac 2 ounces hot whole milk Freshly grated nutmeg, for garnish Directions Spoon the Tom & Jerry Batter into a small warmed mug or heatproof glass. Gently fold in the Fernet-Branca and Cognac, then gently stir in the hot milk. Garnish the drink with freshly grated nutmeg. Rate it Print