The Le Creuset Butter Crock has an airtight seal to prevent butter from spoiling while keeping it at the perfect temperature for spreading and cooking. The crock is inspired by classic designs, blocking out air that can ruin butter while approximating room temperature to keep the butter soft without melting. Crafted from premium stoneware and finished with a vibrant glaze which is easy to clean, dishwasher-safe, and resistant to chips, scratches and stains. Features Premium stoneware is designed for everyday use Colorful glaze is nonporous, non-reactive and resistant to chips, scratches and stains Virtually non-stick glazed surface is ideal for quick clean-up, and resists cracking and crazing Superior heat retention keeps butter warm or cold for serving Safe for freezer, microwave, dishwasher and metal utensils