Cinnamomum cassia United Kingdom, and India is Chinese cinnamon. "Indonesian cinnamon" ("C. burmannii") is sold in much smaller amounts. Chinese cassia is produced in both China and Vietnam. Until the 1960s, Vietnam was the world's most important producer of Saigon cinnamon, which has a higher oil content , and consequently has a stronger flavor. Because of the disruption caused by the Vietnam War, however, production of Indonesian cassia in the highlands of the Indonesia island of Sumatra was increased to meet demand. Indonesian cassia has the lowest oil content of the three types of cassia, so commands the lowest price. Chinese cassia
Cassia roxburghii Cassia roxburghii The Red Cassia, (Cassia roxburghii), also known as the Roxburgh's cassia, and Ceylon senna, is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It ranges throughout South India and Sri Lanka. The Latin specific epithet "roxburghii" refers to the Scottish Botanist William Roxburgh. The red cassia is a medium-sized tree, growing to tall with spreading, drooping branches. The leaves are clusters of pink, rose or orange flowers, long, and pinnate with three to eight pairs of leaflets, each leaflet long and broad. The flowers are