Re: What's the best material a bowl can be made of?
pumice? i really dont see how you can make a bowl out of pumice. the phunells im pretty sure are just a different clay than other bowls since they are thrown on a wheel and ive never seen pumice clay.
for heat retention i would say ceramic/clay but for heat distribution glass/metal (glass and aluminum have about the same thermal transfer IIRC) and glass should cool off faster than ceramic/clay