From Le Creuset, the Stoneware Butter Crock features: Butter crocks have been in use in parts of Europe dating back to the Middle Ages, long before reliable refrigeration was available. These airtight ceramic vessels prevented butter from spoiling while keeping it at a reasonable temperature. The stoneware butter crock is inspired by classic crock designs, blocking out air that can ruin butter, while approximating room temperature to keep the butter soft without melting. Stoneware Dense stoneware blocks moisture absorption to prevent cracking, crazing and rippling Impermeable exterior enamel resists stains and scratches from metal utensils Nearly-non-stick glazed interior easily releases foods for quick cleanup Dishwasher-safe Measures Interior Dimensions: 3.5" L x 3.5" W x 3.5" H Exterior Dimensions: 4" L x 4" W x 4" H Capacity 6-oz Imported.