Flavored syrups typically consist of a simple syrup, that is (sugar fully mixed with water while heated), with naturally occurring or artificial (synthesized) flavorings also dissolved in them. Flavored syrups may be used or mixed with carbonated water, coffee, pancakes, waffles, tea, cake, ice cream, and other foods. There are hundreds of flavors ranging from cherry and peach to vanilla to malt, hazelnut, coconut, almond, gingerbread, chocolate, peppermint, rootbeer, and even toasted marshmallow.
In coffee and espresso drinks
Flavored syrups can also be used to make the increasingly popular east coast inspired Frappes, which when made with coffee can have other names such as Frappuccino, a word created by Starbucks Corporation to trademark their version.
References
Flavored syrup Wikipedia(Text) CC BY-SA