Cinnamon is rich in minerals such as potassium, calcium, iron, magnesium, phosphorus, and zinc. It contains B vitamins, vitamins C, A, and PP and tannins, essential oils, and fiber.
Interesting fact: Cinnamon has a less elegant "double" – cassia, a Chinese brown tree. Cassia bark is much thicker, has a reddish tint, and resembles wood. Cinnamon, on the other hand, is less dense and crumbly and has a much better flavor. Making seasoning from cassia bark is more cost-effective; therefore, most of the cinnamon on supermarket shelves is actually cassia bark.