The eggnog of today is generally a tame affair, served around Christmas time. But there was a day when Eggnog was a hard-drinking pioneers beverage, it's been called the antebellum "dry martini of the south", and a favorite of military men. We have eggnog recipes from three presidents: George Washington, William Henry Harrison, and Dwight Eisenhower, and Texan prisoners held by Santa Anna made eggnog with mezcal. It even inspired a famous riot at West Point, and one of the ringleaders was a young Jefferson Davis.