Cinnamomum cassia, called Chinese cassia or Chinese cinnamon, is an evergreen tree originating in southern China, and widely cultivated there and elsewhere in South and Southeast Asia (India, Indonesia, Laos, Malaysia, Thailand, and Vietnam). It is one of several species of Cinnamomum used primarily for their aromatic bark, which is used as a spice.
Vietnamese cassia cinnamon comes from the bark of the Cinnamomum loureirii cassia tree that is native to the higher, mountainous regions of Central and Northern Vietnam. Regarded by many as the world’s most aromatic cinnamon, this Vietnamese variety has the highest concentration of essential oils of any cinnamon currently found in the world today. Because of the powerful amount of aromatic oils, Vietnamese cinnamon is extremely intense and concentrated with sweet cinnamon flavor. The oil concentration is so high that if you ignite the branch, it will spark!