I dont feel happy at all with this cookware set. I used the pot to cook soups and it released the yellow liquid from both the pot and its lid. The lid then became rusted as the first image regardless my cleaning effort. All of the pans start rusting as well with yellow marks on the surface even though i have not used them at all. Maybe this kind of cookware needs intensive maitenance and limited food storage time so that it would not be worn out. But i feel tired if i have to pay so much time on taking care of them.