|from Koehler's Medicinal-Plants (1887)|
(Nees & T.Nees) J.Presl
Cinnamomum cassia, called Chinese cassia or Chinese cinnamon, is an evergreen tree originating in southern China, and widely cultivated there and elsewhere in southern and eastern Asia (India, Indonesia, Laos, Malaysia, Taiwan, Thailand, and Vietnam). It is one of several species of Cinnamomum used primarily for their aromatic bark, which is used as a spice. In the United States, Chinese cassia is most common type of cinnamon used. The buds are also used as a spice, especially in India, and were once used by the ancient Romans.
The tree grows to 10–15 m tall, with greyish bark and hard, elongated leaves that are 10–15 cm long and have a decidedly reddish colour when young.
Production and uses
Chinese cassia is a close relative to Ceylon cinnamon (C. verum), Saigon cinnamon (C. loureiroi, also known as "Vietnamese cinnamon"), and Indonesian cinnamon (C. burmannii). In all four species, the dried bark is used as a spice. Chinese cassia's flavour is less delicate than that of Ceylon cinnamon. Its bark is thicker, more difficult to crush, and has a rougher texture than that of Ceylon cinnamon.
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 has a sweeter flavor than Indonesian cassia, similar to Saigon cinnamon, but with lower oil content.
Cassia bark (both powdered and in whole, or "stick" form) is used as a flavouring agent for confectionery, desserts, pastries, and meat; it is specified in many curry recipes, where Ceylon cinnamon is less suitable. Cassia is sometimes added to Ceylon cinnamon, but is a much thicker, coarser product. Cassia is sold as pieces of bark (as pictured below) or as neat quills or sticks. Cassia sticks can be distinguished from Ceylon cinnamon sticks in this manner: Ceylon cinnamon sticks have many thin layers and can easily be made into powder using a coffee or spice grinder, whereas cassia sticks are extremely hard and are usually made up of one thick layer.
Cassia buds, although rare, are also occasionally used as a spice. They resemble cloves in appearance and have a mild, flowery cinnamon flavor. Cassia buds are primarily used in old-fashioned pickling recipes, marinades, and teas.
Health benefits and risks
Chinese cassia (called ròu gùi; 肉桂 in Chinese) is produced primarily in the southern provinces of Guangxi, Guangdong, and Yunnan. It is considered one of the 50 fundamental herbs in traditional Chinese medicine.
Due to a blood-thinning component called coumarin, which could damage the liver if taken in huge amounts, European health agencies have warned against consuming high amounts of cassia. Other possible toxins founds in the bark/powder are cinnamaldehyde and styrene.
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