Cinnamon

The dried inner bark of tropical Cinnamomum trees, curled into quills or ground to a warm, sweet-woody powder. There are really two spices sold under the name — delicate Ceylon “true cinnamon” and the hotter, bolder cassia that fills most American spice jars.

What it is

Cinnamon is the dried inner bark of several evergreen trees in the genus Cinnamomum. The bark is peeled, the papery outer layer scraped away, and the inner bark dried so it curls into the familiar rolled sticks, called quills; the aroma comes chiefly from cinnamaldehyde. The crucial thing to know is that “cinnamon” is really two different spices. Ceylon cinnamon (Cinnamomum verum — literally “true cinnamon,” also called C. zeylanicum) comes mainly from Sri Lanka. Its quills are tan, thin, soft and crumbly, layered like a fine cigar, and its flavor is delicate, sweet, and complex. Cassia — an umbrella for C. cassia (Chinese), C. burmannii (Indonesian/Korintje), and C. loureiroi (Vietnamese/Saigon) — comes from China, Indonesia, and Vietnam. Its bark is darker reddish-brown, hard, and rolls into a single thick curl, and its flavor is stronger, hotter, and more intensely “cinnamon” because it’s higher in cinnamaldehyde. ⚠ The correction most people miss: nearly all the cinnamon sold in the U.S. — the supermarket jar, the stick in your mulled cider, the dusting on your latte — is actually cassia, not true cinnamon. “Ceylon” is the specialty product you have to seek out by name.

History & origin

Cinnamon is one of the oldest traded spices, mentioned in ancient Egyptian, Chinese, and Hebrew texts and used in Egyptian embalming. For centuries Arab traders guarded its source with fantastical tales — that cinnamon sticks were gathered from the nests of giant “cinnamon birds” on inaccessible cliffs, or from valleys guarded by serpents — deliberate misdirection to protect a monopoly and justify the price (the Greek historian Herodotus repeated these stories in the 5th century BCE). The real source was South and Southeast Asia. When Europeans finally reached the spice’s home, control of Sri Lanka’s cinnamon became a prize fought over in turn by the Portuguese, then the Dutch (who monopolized it via the Dutch East India Company), then the British — a small island’s bark helping to steer centuries of colonial commerce, much as Black Pepper and cloves did.

Where it comes from today

Sri Lanka remains the near-exclusive source of true Ceylon cinnamon, which it still produces by hand-peeling and rolling the delicate inner bark — skilled, labor-intensive work that helps explain its higher price. Cassia is grown far more widely and cheaply: Indonesia (the Korintje cassia that dominates American “cinnamon”), China (Chinese cassia), and Vietnam (Saigon cassia, the boldest and highest in cinnamaldehyde). Because cassia is cheaper and more pungent, it fills most of the world’s ground cinnamon, baking spice, and industrial flavoring. If a label just says “cinnamon” with no species and no “Ceylon,” it is almost certainly cassia — and that’s not a defect, just a different spice for a different job.

How it’s used today

Cinnamon is a backbone of sweet baking — cinnamon rolls, snickerdoodles, apple pie, coffee cake, French toast — and of warm-spice blends like pumpkin-pie spice, chai masala, and Chinese five-spice. It’s equally at home in savory cooking across the world: Moroccan tagines and b’stilla, Mexican mole and café de olla, Indian biryani and garam masala, Middle Eastern rice and lamb, Greek moussaka and stifado. Which cinnamon to use depends on the dish. For a delicate custard, rice pudding, or fine pastry where cinnamon shouldn’t dominate, Ceylon’s subtlety shines. For a big, bold snickerdoodle, a mulled cider, or anything that needs to punch through, cassia’s heat is exactly right — most American baking recipes were in fact developed with cassia. There’s also a health angle: cassia is high in coumarin, a natural compound that can stress the liver in large, regular doses. Ceylon contains roughly 250 times less coumarin — negligible amounts — so if you take a spoonful of cinnamon daily (in oatmeal, smoothies, or as a supplement), Ceylon is the sensible choice; for the occasional batch of cookies, ordinary cassia is fine.

Make your own

You can’t make cinnamon at home — it’s tree bark, harvested from mature Cinnamomum trees grown in tropical climates and cured by peelers with specialized skill (especially for Ceylon’s thin, multi-layered quills). What you can do is buy smart and process it yourself: purchase whole sticks rather than pre-ground, because ground cinnamon loses its volatile aroma over months, and grind your own in a spice grinder or grate it on a microplane for a fresher, brighter spice. You can tell the two apart at home: a Ceylon stick is thin, tan, and crumbles easily into many soft layers, while a cassia stick is hard, dark, and rolls in a single thick curl you can barely dent. To make cinnamon sugar, blend ground cinnamon with granulated Salt-free sugar to taste; for mulling, toss a whole stick into cider or wine and fish it out later.

Substitutes (if absolutely necessary)

• Ceylon and cassia are interchangeable in most recipes — just remember cassia is stronger, so use a little less if a recipe was written for Ceylon, or a little more Ceylon if it was written for cassia.
• Pumpkin-pie spice or apple-pie spice — cinnamon-forward blends that stand in when you want the warm-spice effect; they also carry nutmeg, clove, and ginger.
• Cassia bark / Chinese cinnamon — the whole-stick form common in Asian braises and five-spice; use where a bold, hot cinnamon note is wanted.
• Nutmeg, allspice, or cardamom — different warm spices that can cover for cinnamon in a pinch, though the flavor shifts noticeably.

Where to find it

• Local store: every market carries ground and stick cinnamon — but it’s almost always cassia, whether or not the label says so.
• Online / specialty: look specifically for “Ceylon” or “Cinnamomum verum” on the label to get true cinnamon; spice merchants also sell named cassia (Korintje, Saigon) so you can pick your intensity.
• Make your own: you can’t grow-and-cure it outside the tropics, but buy whole sticks and grind fresh for far more aroma than pre-ground.