The first thing we want to do is strongly dissuade people from buying pre-flavored coffee. On top of the list of problems is the fact that they permanently stain your coffee making equipment with their scents. Pre-flavored coffee is not flavored with syrups but with very powerful oils. Avoid them at all costs. Other problems exist but that is not the purpose of this article.
Syrups work great.
They come in a wide variety of flavors and are easy to use. The bad thing about syrup is that they are difficult to find. And when you do find them you have to buy large bottles of them. But don't worry there are alternatives, such as natural spices and fruits. This is the method we recommend.