Stores may carry as many as thirty varieties of coffee. Internet sites may offer even more. Each one has a name, plus a few aliases. The whole business is not quite as complicated as it may appear at first encounter, however. No matter how many names there are, they all refer to the degree to which the bean is roasted, the place the bean came from before it was roasted, the dealer’s name for a blend of beans, or a flavoring that was added to the beans after they were roasted.