The Le Creuset Stoneware Mug in Marseille Blue is incredibly versatile. Use for hot drinks, healthy breakfast smoothies, quick hot soups, and delicious desserts - you'll find yourself using your Le Creuset Mug for just about anything. Le Creuset fires its stoneware at 2,156 degrees F, giving it unmatched strength and durability, making it resistant to chipping, cracking and staining. For more than 80 years, Le Creuset has been an inspiration to professional chefs and home cooks alike.