It doesn’t take more than a generous hand, decent whiskey, a comfortable glass and hard-frozen ice to fix an unimpeachable Scotch on the rocks. But a cocktail is something else again. It helps to know that a recipe is essentially a chemical formula, and drinks are not so much mixed as built. You want to measure ingredients as meticulously as a draftsman constructs a blueprint. It won’t ruin a drink if you’re a few milliliters off, but a connoisseur of that particular call will perceive a difference. So give the following formulas your personal best. Story: Emanuel Greenberg, 1984 #PlayboyHeritage