Fee Brothers Grapefruit is from Fee Brothers, a family-owned company founded in 1863 in New York. Fee Brothers survived Prohibition by using glycerin as an alternative to alcohol to make bitters. Fee Brothers Grapefruit is grapefruit flavour, concentrated. It will add grapefruit flavors to a cocktail without colour or mouth feel effects of fresh juice. Pairs beautifully with agave spirits, but also try it on top of a Pisco Sour.