Each Hilltop Cottage Ceramics piece is made by hand from mid-fire stoneware and kiln-fired with lead-free glazes, unless noted otherwise in the item listing. They are food safe and well suited to everyday use, including the microwave and dishwasher, though gentle hand washing is encouraged. To protect your pieces, please avoid dramatic temperature changes, bumps and scrapes, and direct heat sources such as ovens, broilers, or barbecues.