What the Martini is to gin, the Manhattan is to whiskey. Traditionally this cocktail is made with rye whiskey or bourbon, and often Canadian whisky though traditionalists will choose one of the first two options. Beyond the base spirit, the Martini's dry vermouth is swapped out for sweet vermouth and a cherry is the customary garnish. When you can make one of these first two drinks well you should be able to make the other.