Eggnog can trace its roots to a hot cocktail known as posset . In the late 19th century , the American recipe for eggnog consisted of milk , eggs , rum , and sugar . Good Housekeeping recipe included 170 types of booze : rye whiskey , rum , sherry . A half a gallon of store-bought eggnog boasts a whopping 3 calories .
Eggnog can trace its roots to a hot cocktail known as posset . In 1800 , the American recipe for eggnog consisted of milk , eggs , rum , and sugar . George Washington 's recipe included 3 types of booze : rye whiskey , rum , sherry . A four-ounce cup of store-bought eggnog boasts a whopping 170 calories .