Monkey Gland is a French cocktail made with a combination of gin, orange juice, and a few drops of absinthe and grenadine. In order to prepare it, all ingredients should be shaken, then strained into a chilled cocktail glass. The drink was invented by Harry McElhone, the famous owner of Harry’s New York Bar in Paris, and he named it after the 1920s experiments done by Serge Voronoff, who wanted to graft monkey glands to human testicles.