(If I am beating a dead horse, a subject that has been covered to death
before, my apologies, please point me to a link.)

Clear, mucus-like slime in teapot. No off-flavor.

For years I prepared green tea in a small ceramic teapot. I bring water
to a boil in a kettle, pour some into a cup to cool it, then pour that
into the pot over a bunch of green tea leaves. I've used nice green tea
-- senchas -- from a local Japanese store, but find that Trader Joe's
"Uncle Lee's" loose leaf is plenty fine for me. The tea steep for a few
minutes then I pour it. Later in the day, I'll often just add more dry
leaves atop the older leaves already in the pot to make a
stronger-flavored tea. I did it like this for years. It makes a cup that
I like.

Moved to a new house in August and something odd is happening. If I
leave the old, wet leaves in the pot overnight (per normal sometimes)
and prepare a new cup in the morning by adding new leaves to the old
with hot water, the water seems to turn into a clear thick slimy liquid.

The slimy tea tastes just like the regular tea with no off-flavors. But
the consistency is totally off-putting. What /is/ this stuff? Oh -- one
more thing: in this house I am using reverse-osmosis filtered water. At
the old house I used just plain tap.

Rinse out the pot and start fresh -- regular green tea.

I've read about kombucha and it is described as having a distinctive
taste? What new form of life am I creating here?

--
Mike "Rocket J Squirrel" Elliott
71 VW Type 2 -- the Wonderbus (AKA the Saunabus in summer)