Karaca Alacahöyük Copper Shallow Casserole with Lid, 18cm, Copper Due to the nature of the copper material, it can darken over time as a result of contact with air. Color changes may occur after washing. Long-term use of the product may require tinning. It provides excellent heat distribution thanks to its copper material. It cannot be washed in the dishwasher. Maintenance of Copper Products ; Do copper products darken? Yes, it is normal for uncoated copper to darken. Coppers coated with nickel on the outside do not tarnish. How long should copper products be tinned? Depending on the frequency of use, the need for tin arises. Tin is required once a year on average. Coppers that come into contact with water, such as copper teapots, mugs, and pitchers, do not require tin. How should the home care of copper products be? If your copper products are dark, you can polish the outer part of your copper with ready-made polishing products such as tomato paste, lemon, ash. Content: 18cm Shallow Casserole & Lid 1.4L Material: Copper Suitability: Hand wash is recommended Guarantee: 2 Year