Gin and molasses. The English sailors call the common wines of the Mediterranean blackstrap.--Falconer's Marine Dictionary.
Come, Molly, dear, no black-strap to-night, switchel or ginger pop.--Margaret, p. 300.
·noun A mixture of spirituous liquor (usually rum) and molasses. II. Blackstrap ·noun Bad port wine...
Webster's Dictionary of the English Language