What type of crud, and how did it get there?

--
Christopher A. Young
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..


"Matt" wrote in message
...

I actually use this device for homebrewing, so it is already
off the
intended use. I could use caustic soda, but would prefer to
do this
without chemicals. I doubt that the flame is really 3700
degrees, as
that would likely melt the stainless steel as well, and I
know that's
not the case.

Anyone else?