A cinnamon stick is a dried, rolled, and elongated piece of the inner bark of the Cinnamomum verum or Cinnamomum cassia tree. This versatile spice is well-known for its warm and sweet aroma and is used in various culinary and medicinal applications. Cinnamon sticks are available in different sizes, typically ranging from 2 to 4 inches in length. They can be used whole or ground into a powder to add a distinctive flavor and fragrance to a wide range of dishes and beverages.