Cinnamon or Cinnamonum Verum usually comes as Cinnamonum Zeylanicum (Ceylon cinnamon) and Cinnamomun Aromaticum (Chinese cinnamon). Ceylon cinnamon, which is also known as true cinnamon, is more refined, subtle in taste, and rare in the U.S.A. The Chinese cinnamon, which is called Cassia, is cheaper and more common in the United States. Cinnamon comes ground or in tubes called quill, known as cinnamon sticks.Cinnamon has been proven to increases mental capacities: cognitive function, brain activity, memory, attention processes, visual-motor speed, virtual recognition memory.Cinnamon has been shown to stop bacterial growth when added to food. It has also been shown to stop E Coli in unpasteurized juice.