Thank you for your review and for your feedback. We are sorry to hear about your experience. The textured black matte enamel can be cleaned with soapy water and a sponge or with a non-abrasive cleaner. Every piece of Staub cast iron cookware is made from a one-use sand mold and absorbs enamel coatings in a distinctive way. Subtle differences arise from this production process and contribute to the intrinsic beauty of Staub products and reflect the artistic nature of the product. These unique features should never be considered as defective. We will assist you by contacting you directly.