Cinnamon is a spice obtained from the inner bark of scientifically known trees. It is also found as an ingredient in a variety of foods and recipes. There are two main types of cinnamon: Ceylon cinnamon: This type is also known as "true" cinnamon. Cassia cinnamon: This is the most common variety today and is what people often refer to as "cinnamon". Cinnamon is made by cutting the stems of cinnamon trees. Then the inner bark is removed and the woody parts are removed. When dry, it forms strips that curl into rolls called cinnamon sticks. These sticks can be ground to form cinnamon powder. The distinctive smell and taste of cinnamon is due to the oily part, which is very high in the cinnamaldehyde compound.