The name of this drink is something of a joke. The two main components are an Advocaat egg nog liqueur and orange juice. Advocaat is dutch and while the low country isn’t exactly above the arctic circle the name has kind of stuck.
2 oz Egg Nog Liqueur (advocaat)29
2 oz Pulp free Orange Juice
There isn’t anything terribly complicated here, advocaat has some lemon custard flavors to it that blend well with citrus and as a morning drink has much to recommend it.
As an AM drink I also try to shy away from anything that requires ingenuity this early in the morning. If you want to expand this beyond the 2 ingredient level you can also float a little cream on the top and add club soda which turns it into an Australian drink called a fluffy duck.