Cinnamon is a spice that comes from the inner bark of the tropical Cinnamomum tree (colloquially known as the cinnamon tree), sold as rolled quills (cinnamon sticks) or ground into a fine powder.
Cinnamon contains several aromatic compounds, the most recognizable of which is cinnamaldehyde, which gives cinnamon its spicy bite.
There are various types of cinnamon including the most common form, cassia cinnamo, also known as Chinese cinnamon. Popular in East Asia and the US, cassia cinnamon has dark, thick, and coarse quills in a double-spiral shape, and a bittersweet, burning-spicy flavor due to high levels of cinnamaldehyde. A source of antioxidants and other anti-inflammatory health benefits, cinnamon is a common ingredient in desserts, savory dishes, and alcoholic beverages