I
finally got around to washing the mushroom
wax pot last night and had some trouble.
It seems like a small amount
of wax somehow leaked out and bonded with the teflon.
Next year I'll use stainless
steel instead of teflon and avoid this sticky problem.
The PTFE coating in pans usually porous, because of the way it is made (sintering). So what you're probably seeing is that the wax has settled into the pores of the coating. Just put some oil in the pan and heat it. The wax should melt before you damage the pan, since PTFE can withstand 260 °C (500 °F) without trouble.