Comments about Kuhn Rikon 30471 Durotherm Pressure Cooker:
I like Kuhn Rikon's product a lot and this one does not let me down. After I received this pot/pan, I heard "ringing " sound when I was shaking it. I was afraid that I got a deficient product. Guess what? I realized that it is normal after I read the manual. It said "any ringing sound you may hear from your DUROTHERM does not indicate a manufacturing fault or material deficiency. It is due to superfluous weld beads inside the double walls which may have become detached from the seams of the aluminium heat-conducting base during production."
What a relief!