Review on 🔨 Premium Greenco 3.75" Marble Mortar and Pestle - White/Gray: Perfect for Grinding and Crushing by Eric Jackson

I use it to grind herbs. Before first use, use a pestle to grind and grind the rice into powder. Then puree and grind the rice that has been soaked in water for 5 minutes to form a paste. Then rinse with warm water and dry. Yes, the mortar has grooves on the inside, but I haven't had any problems with it. Makes shredding easier as it keeps objects in solution. Also additional sanding surface.