Took part in Jay Widmer's Anagama Firing at Digger Mtn a couple weekends ago. After purposely stoking wet fir, maple, alder and oak--including a lot of limb wood--for 48 hours, we were anxious to see how things turned out. A week later we found many pots with iridescent patterns in the ash/silica build-up, as well as super warm glows of orange, red and burnt umbers underneath or away from the flame. It was cooler in the back, but some lovely colors nonetheless.
We'll be sure to try for those sparkles again next firing.
This pot is one I showed many moons ago just after making it... It turned out to be my favorite of the firing. A little on the cool side but could never get these marks again if I tried.