Cinnamon is commonly sold in powder form. You could also purchase cinnamon sticks, which are actually rolled-up pieces of bark obtained from trees belonging to the genus Cinnamomum. Cinnamon is a pretty popular spice all over the world, with various cultures utilizing it in some form. With its distinctively woody and sweet-spicy flavor, it is a great addition to cereals, beverages, desserts, and even entrees. Traditional Mexican chocolate drinks typically contain cinnamon, as do savory dishes in Middle Eastern cuisine.