Hand- Painted Polish Stoneware Folk Art - A Century-Old Tradition. In the small village of Boleslawiec, Poland, hundreds of skilled artisans have migrated to this region to produce wonderful works of art for our daily use in the kitchen and home. They continue the Polish folk art tradition of painting on vessels using the hand stamp technique. These pieces go way beyond just good looks. The unique glaze, clay and high firing temperatures result in cooking vessels of enormous durability. In fact, you can cut right on these pieces without marring the surface. The glaze allows food to release with little or no oil. The pottery retains both heat and cold for long periods of time, making them wonderful pieces for cooking and serving. Dishwasher, oven and microwave safe.