Scrape a quarter of a pound of chocolate very fine, put it in a quart of milk, boil it till the chocolate is dissolved, stirring it continually; thicken with six eggs. A vanilla bean boiled with the milk, will improve the flavor greatly.

Source: Randolph, Mary, The Virginia House-Wife, 1824, with Historical Notes and Commentaries by Karen Hess, University of South Carolina Press, 1984, Pg 175.