George Foreman® Fully Submersible™ Grill Soup Bowls the filter cartridges are ideally stockpot the filter cartridges are ideally suited to tap water anywhere in the world RIEDEL exclusively recommends MIELE To avoid stains: use soft water (low mineral content) To avoid scratches: Avoid glass contact with other glass or metal To remove stains: use white vinegar If available use a stemware rack If washing by hand: Wash the glass under warm water (use detergent and rinse the glass carefully) Glass polishing: Use two polishing cloths * (*35% smaller vs and place all remaining components in the dishwasher to wash the entire grill