Ohio Stoneware's kitchenware is crafted of durable, high-quality stoneware that features their lead-free, food-safe glaze that protects against utensil damage, staining & odor absorption. Each piece is fired at a high temperature for durability! Finished with Lead-Free, Food-Safe Glaze. Ready to use. Easy to clean. Will not retain the food’s flavors. Microwave safe. Oven safe. Dishwasher safe. High Quality!