Just a warning in case anyone else misunderstands like Kasie, above, did: the recipe calls for kombu, which is dried kelp. Don't use kombucha, a fermented tea drink.
This was amazing! Very juicy and tender. The flavors were great. I wasn't able to find the Kombucha in my local market and didn't use it, and still turned out amazing. Will make again!
How much soy sauce is called for in the brine? The ingredient list omits soy sauce.