Method

• 

  Step 1

  In a mixing bowl, combine the cold egg and sugar to whisk until the sugar dissolves and the mixture turns airy and frothed.

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  Step 2

  Gradually whisk in the milk and vanilla extract, ensuring that all ingredients are thoroughly incorporated to form a smooth base.

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  Step 3

  Pour the contents into a chilled serving glass, before adding the Irish cream liqueur.

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  Step 4

  Stir to combine, garnish with freshly grated nutmeg and, if preferred, a cinnamon stick. 

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  Step 5

  Serve immediately when still chilled.