shake or stir?
James Bond may have topped the list of fictional characters in the spy genre in the 1960s, but his insistence that his martinis be “shaken, not stirred” was a dead giveaway that neither he nor Ian Fleming, his creator, knew much about bartending. Cocktails that contain mostly spirits, also known as aromatic cocktails, such as the Old Fashioned, the Manhattan, and the classic Martini, are stirred, not shaken. All spirits possess similar densities, so an easy stir is sufficient to get them to handshake. Stirring also preserves the drink’s clarity. And get this: shaking a drink composed entirely of spirits can reduce its proof by nearly half.
In contrast, sour cocktails, or those that contain ingredients other than alcohol, should be mixed in a shaker and, depending on the specific additions, strained into a cocktail glass. Shaking creates air bubbles, which invite ingredients of varying densities to merge. Aeration also improves texture and, in some cases, produces a desired creamy or frothy effect. As a rule of thumb, shake dinks that combine alcohol with coffee, cream, ice cream, egg or fruit juice. Of course, if a recipe directs you to dump all the ingredients in a blender, there won’t be any guesswork on your part.