The Manhattan is a classic cocktail that is made with rye whiskey, sweet vermouth, and bitters. A Perfect Manhattan is made with the addition of dry vermouth. The Manhattan is traditionally stirred and not shaken, and bitters are a key ingredient in the drink. The best whiskey to use in a Manhattan is one that you prefer the taste of, whether it's rye or bourbon.Tips for making the perfect Manhattan: Use high-quality ingredients, stir the drink instead of shaking it, and experiment with different types of bitters and vermouth to find the perfect combination for your taste.