Warm the Milk: In a medium saucepan, warm up the Clover full cream milk gently on low heat. Do not boil; it needs just enough heat to go with the rest.

Mix the Base: In another bowl, whisk together eggs (if used) and sugar until they become light and fluffy.

Combine: Slowly pour in the warm milk into the egg mixture, whisking as you do so; this tempers the eggs and prevents them from scrambling.

Cook the Mixture: Pour everything back into the saucepan, and on low heat, stir constantly, cooking just until the mixture thickens slightly into a custard-like consistency.

Add Flavor: Remove from heat and stir in the ingredients: Clover Classic custard, cream, vanilla extract, ground cinnamon, and nutmeg.

Chill: Pour everything into a pitcher, cover, and refrigerate at least 1 to 2 hours to give time for the flavors to blend and chill completely.

Serve: Pour out into glasses, dust with nutmeg, and garnish with a cinnamon stick.