Stoneware mugs decorated with the black and white RÃ¤symatto pattern. This mug set is decorated with the RÃ¤symatto pattern. It is made of white stoneware that is dishwasher, oven, microwave, and freezer proof. The RÃ¤symatto (rag rug) pattern inspired by allotment gardening, is linked to topical themes like sustainable living and the joy of working with your hands. Allotments, with their flower and vegetable beds, represent urban nature at its best, and rag rug on the floor of an allotment cottage tells a colorful story of its own.