“Some of the passengers comforted themselves with a glass of egg-nog, ...”
~ from Travels Through Part of the United States and Canada in 1818 and 1819 by John M. Duncan
Duncan footnotes the word egg-nog and provides this description: A compound of milk, raw eggs, spirits and sugar, violently agitated by a stirrer which is twirled round between the hands. In the instance referred to, one of the passengers after turning off his tumbler, and smacking his mouth, insisted that it had been made with raw sugar; this the tavern-keeper stoutly denied, and as we afterwards discovered with truth, for he had no sugar of any kind in the house and had substituted molasses.
Bunk's recipe for Christmas (or anytime) Egg Nog / New Jersey / Dec. 2009