We calphalon knives knives non-stick cookware and it seems that after 5 years, not wanting to be clean. Even the best washing leaves a vague sort of look at them. In addition, the exterior of our most used pan is dark stained, as a kind of pan well seasoned cast iron. Is that okay, or I have to clean better too? Jay. We have questions about cleaning: anodized aluminum, unanodized, non-stick, cast iron, stainless steel, and brown spots. This is a duplicate of one or all of them. hobodave. Hobodave @: I could not find the question that will not stick, though I could have sworn it was aI was tired of cutting vegetables and other, cursing because it cuts poorly. I'm sharpening my knife with my rat tail nothing worked!. So here's my new knife. I do not know if it's good because I went there by chance but so far I love it and it cuts like a charm. Calphalon is a chef's knife 6 ". Yes it seems a good knife you bought and cWe calphalon knives cookware non-stick and it seems, after 5 years, not wanting to s.