Staub Garlic Keeper, Dark Blue - Dark Blue Vitreous glass porcelain-enamel finish Beautiful finish is highly scratch resistant Stoneware will not absorb moisture, diffuses heat gently and retains heat exceptionally well Transitions from oven to table beautifully Microwave, freezer, broiler, and oven safe up to 572F Dishwasher safe Designed by Staub in France, manufactured in China