Vanessa,
In one sense, everything is macrobiotic, and in that sense, kombucha tea is macrobiotic but as a beverage for everyone to drink regularly or to take for a wide variety of ailments, it is not.
According to Fred Pulver at the Carbondale Center For Macrobiotic Studies
http://www.macrobiotic.org/letters3.html#paulette, kombucha tea is yin because it is a fungus that is grown on simple sugars and might be okay for some yang people but certainly is not good for people with yin conditions and/or constitutions.
Did you think that kombucha looks and sounds like a combination of kombu sea vegetable and tea (kombu + cha)?
It's only coincidental!
The fungus that most macrobiotic people are using now-a-days in cooking and healing is the dried shiitake mushroom, which grows on oak logs and is more yang than kombucha.
And most macrobiotic people don't use it every day.
Does this make any sense, to you?
Thank you, very much.
Bruce Paine