From koreanrecipes.org.If spicy is not your thing,don't boil it for that long.Just a little simmer to get it just the way you like it.Koreans eat very spicy food so I'm not surprised by boiling it for 25-30 minutes.Even though I love hot food,for me even the 15 minutes was too much.I suggest to taste it and turn off the heat when is suites your taste.
Clean the ginger well
Rinse the cinnamon in cold water.
Thin slice the ginger.
Put the ginger, cinnamon, and water into a pot.
Boil it on medium (or low) heat for about 25-30 minutes.
Sieve the ginger and cinnamon. (Use a white straining cloth if you can, to catch the small dirt from the cinnamon).
Serve it in a tea cup. (You can also add some pine nuts and honey).
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