Cassia Cinnamon
Cassia cinnamon refers to the spices produced from the inner bark of cinnamon trees that are not true cinnamon (Ceylon cinnamon | Cinnamomum verum). Cassia is primarily made from the following tropical evergreen trees in the laurel family:
Chinese Cinnamon: Cinnamomum cassia
Vietnamese Cinnamon: Cinnamomum loureiroi
Indonesian Cinnamon: Cinnamomum burmannii

REGION OF ORIGIN
Not surprisingly, the three main cassia species hail from their respective names: Chinese cassia is from Southern China, Vietnamese is from central and northern Vietnam, and Indonesian is primarily from Sumatra and Java.
PART & COLOR
The inner bark dries into quills ("sticks") that are hollow and much thicker and harder than those of true cinnamon, which are filled with tightly rolled, delicate bark. All three varieties are darker than Ceylon cinnamon, but they vary: Chinese cassia is a reddish brown, Vietnamese is a deeper, rust-colored brown, and Indonesian is a greyer brown. Cassia is also often sold as "cassia chips"—just broken up quills (below). The trees' dried unripe fruits, called "buds," are also used.
HARVEST
The bark is harvested when cassia trees are about 5-7 years old. It is most easily peeled during the rainy season as the moisture softens it, so the harvest aligns with the wet seasons of each region: China in the spring and autumn, Vietnam from April to September, Indonesia from November to April.

FLAVOR & AROMA PROFILE
Unlike true cinnamon’s delicate complexity, cassia delivers a powerful, almost spicy punch. With a higher concentration of cinnamaldehyde, the compound responsible for cinnamon's signature flavor and aroma, cassia varieties offer a more intense and lingering fragrance that can easily fill a room. It is less nuanced and hence thought to be less refined than Ceylon, but it still has merit.
On the palate, cassia cinnamon's flavor mirrors its aroma, offering a robust sweetness followed by a warm, slightly bitter spiciness that sits on the tongue. The taste is bold, assertive, and almost astringent. Chinese cinnamon exhibits a strong, spicy-sweet flavor. Vietnamese Cinnamon is renowned for its exceptional potency, but with a more prominent citrus note. It is often considered the most intense cinnamon species. Indonesian cinnamon is known for its balance of sweetness and spice and its warm, inviting fragrance. Whichever type you prefer, cassia has an extra punch that can be useful.
CULINARY USES
In Chinese cuisine, cassia is a key component of the iconic five-spice powder. This aromatic blend is used to season everything from braised meats and roasted duck to stir-fried vegetables and noodles. Chinese cinnamon is also often used whole to infuse flavor slowly throughout the cooking process. In Vietnamese cuisine, cassia is used to flavor rich and hearty phở broths, adding a warm, sweet note that complements the other herbs and spices like Thai basil, cilantro, star anise, and cloves. Ground Vietnamese cinnamon is also often used in spice blends for its powerful, sweet-spicy kick. Indonesian cinnamon is commonly used in savory dishes like rendang, curries, and stews, but its balanced profile is equally cherished in baked goods and desserts like pies, pastries, and puddings.
The increased supply of cassia makes it a popular substitute for true cinnamon, contributing to why "cinnamon" is such a beloved flavoring worldwide. Cassia accounts for about 90% of the total global cinnamon supply.
