Original: Eggnog is a sweetened dairy-based beverage made with milk, cream, sugar, beaten eggs (which gives it a frothy texture), and flavoured with ground cinnamon and nutmeg; alcoholic versions also exist with the addition of various liquors, such as brandy, rum, whiskey or advocaat.
Simplified: Eggnog is a sweet dairy drink made with milk, cream, sugar, beaten eggs, and flavoured with cinnamon and nutmeg.