NO CLAY DOES NOT WORK......when i was like 12 i made a bowl (it was really cool looking too)....fired it up in my oven.....did everything i was suposed to......it worked (just like anything with 2 holes).....but it tasted like i was smoking clay....and crackled all weird....and got hot....i wouldnt waste any time trying it.......if youre desperate.....use an apple