Williams Sonoma Butter Keeper

The copper is polished to a shine, but it will naturally develop a bronze patina over time as it reacts to the air. If you prefer the original bright look, you can use a copper polish, though many owners prefer the character of the aging metal.

Yes, the interior is lined with food-safe tin, which provides a protective barrier between the copper and your butter. This ensures the butter remains fresh and untainted by the metal.

No, this piece must be hand-washed only. The dishwasher can damage the hammered finish and the protective tin lining, so it is best to clean it gently with mild soap and a soft cloth.

The butter keeper has an 8-ounce capacity, which is equivalent to two standard sticks of butter. It is perfectly sized for keeping a generous supply of softened butter ready for serving.

The glass cover is designed to sit securely on the copper base to protect your butter from debris and odors in the refrigerator. While it is not vacuum-sealed, it provides an effective cover for daily use.