When someone comes in asking for "the healthy one," this is what they mean, and it comes down to coumarin. Our Vietnamese and Indonesian cinnamons are cassia, which is naturally high in coumarin, and in big daily spoonfuls that's hard on the liver.
Ceylon has only trace amounts, so it's the one we point people to when they're taking cinnamon every single day for their health, in their coffee, their oatmeal, their golden milk. It's also been used in Ayurveda for ages to help digestion and warm the body.
I want "Ceylon cinnamon for blood sugar" is what people say when they walk in, since it's the variety researchers usually look at for glucose, again because of that low coumarin.*
On flavor, we're always upfront: Ceylon is the delicate one, lighter and floral, so it's best sprinkled over things right before serving rather than cooked down into a dish. If you want cinnamon to be the star, in a cinnamon roll, a spiced cake, chili, or a rub, that's our Vietnamese, which stays bold and is honestly the best of the three in coffee. Our Indonesian is the middle-of-the-road cook's cinnamon, the one to reach for when you want cinnamon in the background rather than stealing the show. Ceylon is the one you sprinkle and the one you live on daily.
* These statements have not been evaluated by the FDA. Not intended to diagnose, treat, cure, or prevent any disease. Consult your doctor if you are on medication, have a health condition, or are pregnant, nursing, or having surgery.