Cinnamon sticks, also known as cinnamon quills, are the dried bark of the Cinnamomum tree, which is native to Sri Lanka and India. They have a sweet, warm, and slightly spicy flavour and are often used to flavour a wide range of dishes, including baked goods, desserts, and savoury dishes. Cinnamon sticks are a key ingredient in many spice blends, such as apple pie spice and chai spice, and are also used to flavour beverages such as coffee and tea. Cinnamon sticks can be added to dishes whole or ground into a fine powder. They have a hard, woody texture and should be removed from the dish before serving. Cinnamon sticks should be stored in an airtight container in a cool, dry place to maintain their freshness and flavour.