Each butter dish is hand crafted from beginning to end creating a unique, one of a kind piece of functional art Wheel thrown with a white stoneware clay Hand carved and painted with ceramic underglazes Fired twice to temperatures exceeding 2000 degrees F Glazed with a studio made, food safe, non-toxic glaze on the interior, creating a satin finish Microwave and dishwasher safe (however hand washing is highly recommended) Every order is packaged carefully and shipped in biodegradable packaging Size - 4" H x 5" W