I would go with this too: I had a mug where the glaze cracked
round one limb of the handle and if you left it soaking in water
overnight, enough worked its way in through the crack for it
to cause some significant fizzling-and-spurting of steam when
next used in the microwave.


"Peter Scott" wrote in message
...

I have since used same mug at least 20 times .. and it is
back to normal.

# Why would handle only get so hot (way over 100 degrees C)

# Why only the once

# a mate commented that the reason was the handle had touched
the sides
of microwave (unknown) ... but how would that make a
difference.





Any cracks in the handle or holes needed when the cup was
fired? Water
might have got in and boiled.

Peter Scott