Maximize flavor by grinding spices and herbs in a Le Creuset Stoneware Mortar and Pestle in Marseille Blue. An unglazed interior and pestle tip create the perfect grinding surface - smooth to the touch, but rough enough to mash and grind quickly. Le Creuset stoneware offers the ultimate in versatility and durability. Le Creuset stoneware pieces can bake in an oven up to 500 degrees F or go in the freezer or refrigerator. 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.