Next, the egg yolks are whipped up with a splash of rum (or not, if you want to keep the batter kid-friendly),the powdered sugar and the spices. It should run off of the beaters in a thick ribbon.
Then, gently fold the egg whites into the egg yolk mixture. Try to keep as much of the air in the egg whites as possible.
When you’ve mixed it all in, it will create a lovely, thick batter. That is the base of the drink. Add a bit of this batter into a warm mug with a shot of rum and cognac.
Finally, slowly pour hot water or warm milk into the mug, stirring constantly. At the end, you should have a frothy top!
Finish off your Tom and Jerry drink with freshly grated nutmeg and enjoy! This recipe makes enough for a party, so it is perfect for a holiday gathering.