For interested bartenders. The original 1862 bitter that was used in genever cocktails, such as the Very Old Fashioned. Reproduced exclusively for Bols Genever by the Bitter Truth.Jerry Thomas was a professor in the 19th century, and is considered one of the main bartenders of his generation. He created extraordinary bitters. This excellent bitters add depth to a Manhattan or an Old Fashioned.This Jerry Thomas Own Decanter Bitter is herbal based with cloves and lemon peels.