I purchased Kirkland anodized cookware as a wedding gift; similar in quality to Calaphon. I am very satisfied with the set; however the pieces that we use more often have developed a chalkboard-like surface on the exterior; the interior seems fine.
My wife was washing the pieces in the dishwasher; we are not going to anymore because of this result. We learned our lesson. However, does anyone know any way to restore the finish on the exterior anodized cookware? Thanks