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When you grind up cinnamon (say in a coffee grinder) and use it in a drink, it ends up producing this thick sludge.

You can only prevent the sludge from forming if you leave it very course. Why does it turn to sludge? I swear I once had a container of cinnamon that did not produce sludge. Am I buying the wrong cinnamon?

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Are you using a sifter to sprinkle? – MandoMando Mar 16 '13 at 13:18
up vote 8 down vote accepted

The cinnamon "sludge" is fiber. The fiber that came from the cinnamon is soluble in water.

  • 10 grams of cinnamon is about 8 grams of fiber (see
  • it is safe to eat / drink (fiber!) in moderate amount (chinese cinnamon or cassia is not safe in high dose because of its toxic component called coumarin)
  • of course, cinnamon sticks won't produce so much sludge.
  • if you use a hot drink, stir it so it doesn't sit at the bottom.

Ceylon cinnamon (= "true" cinnamon) is different from Chinese cinnamon (= "cassia") and may have different properties w.r.t solubility and water. Check out your container that doesn't sludge, and compare with what you have been using in your grinder.

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In the US at least cassia is the predominant "cinnamon". – Sobachatina Mar 22 '13 at 22:25

After having to avoid consuming powdered cinnamon for months, I've recently found out the method to prevent it from turning into a slime when mixed with water or tea (hot or cold).

The trick is to mix the cinnamon with honey first. You can mix 1/2 teaspoon of cinnamon with a teaspoon or two of honey, and stir it up very well so that the mixture becomes homogeneous as much as possible. Then slowly add the water or tea while stirring the mixture. A cup of mixture prepared this way will make a perfect drink.

Since honey is very healthy by itself, it can only boost positive effects the cinnamon has.

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