A Pestle and Mortar is an item that is used to complete a quest; it has no other use. To get a Pestle and Mortar, one must give 100 Harpie Beaks to Jorda at the Andris Port Outpost. Then, the Pestle and Mortar can be turned in to Leihem at the Underground Library in Brigobaen in exchange for a Gray Robe of Protection and 500 Experience Points.