Mortar and pestle are made of marble. Used for crushing products such as spices, sauces, garlic, walnuts, hazelnuts, etc. If you use it to crush dry foods, just wipe it with a damp cloth. For liquid foods, clean it with a brush in plenty of cold water. If the stain remains, you can wash it in warm water with detergent. Hand wash onlyProduct size:9 cm