Step 1
Whisk the yolks and sugar together in a bowl until they're pale and creamy
Step 2
In a saucepan over medium heat, combine the milk, cream, and nutmeg. Stir often until the mixture reaches a simmer.
Step 3
Slowly add a ladleful at a time of the hot milk mixture into the eggs and sugar mix, making sure to whisky constantly. This should prevent the eggs from scrambling.
Step 4
Pour the mixture back into the saucepan, and whisk over a low/medium heat until the mixture thickens slightly. This should take a couple of minutes.
Step 5
Remove from the heat, stir in the vanilla extract and your chosen spirit, then cover a refrigerate until chill. Serve cold, topped with extra nutmeg.