BIA Cordon Bleu 8-Ounce Mortar and Pestle Set, White Grinds and crushes, herbs, nuts and spices Textured surface on bowl interior and porcelain pestle base aid in grinding Vitrified and nonporous Stain, odor and crack resistant Safe in the oven, microwave, dishwasher and freezer Mortar and pestle set grinds and crushes herbs, nuts, and spices White porcelain bowl holds 8 ounces, measures 4-1/2 inches in diameter Textured surface on bowl interior and porcelain pestle base aid in grinding Vitrified and nonporous, the pieces won't stain, absorb odors, or crack Safe in the oven, microwave, dishwasher, and freezer