Saigon cinnamon in the context of Cinnamomum cassia

Cinnamon is a spice obtained from the inner bark of several tree species from the genus Cinnamomum. Cinnamon is used mainly as an aromatic condiment and flavouring additive in a wide variety of cuisines, in particular sweet and savoury dishes such as biscuits, breakfast cereals, snack foods, bagels, teas, hot chocolate, and traditional foods. The aroma and flavour of cinnamon derive from its essential oil and principal component, cinnamaldehyde, as well as numerous other constituents, including eugenol.

Cinnamon is the name for several species of trees and the commercial spice products that some of them produce. All are members of the genus Cinnamomum in the family Lauraceae. Only a few Cinnamomum species are grown commercially for spice. Cinnamomum verum (alternatively C. zeylanicum), known as "Ceylon cinnamon" after its origins in Sri Lanka (formerly Ceylon), is considered to be "true cinnamon", but most cinnamon in international commerce is derived from four other species, usually and more correctly referred to as "cassia": C. burmanni (Indonesian cinnamon or Padang cassia), C. cassia (Chinese cinnamon or Chinese cassia), C. loureiroi (Saigon cinnamon or Vietnamese cassia), and the less common C. citriodorum (Malabar cinnamon).

Vietnamese cuisine encompasses the foods and beverages originated from Vietnam. Meals feature a combination of five fundamental tastes (ngũ vị): sweet, salty, bitter, sour, and spicy. The distinctive nature of each dish reflects one or more elements (such as nutrients and colors), which are also based around a five-pronged philosophy. Vietnamese recipes use ingredients like lemongrass, ginger, mint, Vietnamese mint, brown sugar, long coriander, Saigon cinnamon, bird's eye chili, soy sauce, lime, and Thai basil leaves. Traditional Vietnamese cooking has often been characterised as using fresh ingredients, not using much dairy or oil, having interesting textures, and making use of herbs and vegetables. The cuisine is also low in sugar and is almost always naturally gluten-free, as many of the dishes are rice-based instead of wheat-based, made with rice noodles, bánh tráng rice paper wrappers and rice flour.