Pistachio Liqueur

Start by preparing a homemade pudding. Pour the milk into a larger pot, add the vanilla, and heat it slowly.

In a separate bowl, lightly whisk the cornstarch with the egg yolks, granulated sugar, and two tablespoons of milk.

As soon as the milk starts to boil, immediately remove it from the heat and slowly pour it in a thin stream into the egg yolks, stirring constantly, to prevent them from curdling due to the heat.