This is an aromatic spice that is beloved all over the world. From rice dishes and curries in India to delicious cinnamon buns, cinnamon is much valued. Just a tiny pinch of real cinnamon is usually enough to flavor a dish. More often than not, Chinese cassia is often sold instead of cinnamon. Though they look alike, cassia has a weaker aroma. Plus, the cassia sticks are thicker and coarser than real cinnamon sticks. Real cinnamon is also curled on both sides. Cassia sticks curl mostly to just one side. Ground cinnamon can be easily distinguished from cassia by adding a drop of iodine into the powder. If the spice turns blue, it is cassia.