In the bowl of a stand mixer, whip the egg whites and cream of tartar until stiff peaks form.
In a separate large bowl, whisk egg yolks and butter until well-combined.
Using a spatula, fold yolk mixture into the egg whites, taking care not to knock out most of the air. Add spices, and gently fold to incorporate. Cover, and store in the refrigerator until ready to serve.
To assemble the drinks, place heaping tablespoons (think one large spoonful) of the spiced batter into each glass or mug, followed by the rum and cognac. Top with the hot milk (or boiling water), whisking gently while pouring, until the drink is foamy and well-combined. Garnish with freshly grated nutmeg.
INGREDIENTS
E&J Original VS Brandy
1.75L, $22.99
Recipe thanks to: masterclass.com
For the Tom and Jerry batter:
The batter makes an excellent topping for both alcoholic beverages as well as hot cocoa, eggnog, or warm milk for the kids.