Cinnamon is a spice that is made from the inner bark of trees scientifically known as Cinnamomum.It has been used as an ingredient throughout history, dating back as far as Ancient Egypt. Cinnamon is made by cutting the stems of cinnamon trees. The inner bark is then extracted, and the woody parts removed. When it dries, it forms strips that curl into rolls, called cinnamon sticks. These sticks can be ground to form cinnamon powder. The distinct smell and flavor of cinnamon are due to the oily part, which is very high in the compound cinnamaldehyde.