DON SOLO Bowls are made of faience, and they have a beautiful design with variety of fancy colors. These phunnels are going through two firing processes. First one is at temperature of 2,192F (1200 C) and the second, which is the glazed one is fired at temperature of 1,832 F(1000 C). DON SOLO is a great phunnel for short session for 20-30 minutes. It will work better with dark leaf tobacco on foil.