Although there’s no official confirmation on who invented eggnog, most historians agree that eggnog originated in medieval Britain. Eggnog was an upper-class luxury since they were the only ones who had access to the milk, sherry and eggs required to create the original version. Monks in the Middle Ages added figs and eggs and called the drink”posset” while the wealthy kept with the simple recipe and used it for toasts or big events. Research shows that eggnog most likely became associated with the holidays due to a lack of refrigeration. It became a drink for the more common man in America because of the larger farming opportunities and more access to cows and chickens.