Ceramiche Sberna specializes in painting and glazing bisqueware. Outside the kiln room, near a sun-filled window open to a garden, a man in a white apron stands by a huge vat containing white liquid enamel. He takes bisqueware plates from shelves behind him and dips them by gloved hand into the vat, turning them white. Then he sets them on another shelf, where they sit for a day to dry. When they're ready, Francesco Sberna, a grand master who is now in his seventies and who has been creating majolica since he was 12, will sit at his small wooden table and paint them. Sberna is known for his traditional grotteschi designs, gray-and-white patterns of faces, dolphins and other figures on a dark blue background. LeWitt works with him on new designs for her dinnerware collection. (Via Tiberina 146, Deruta, Umbria; 011-39-075-9710206)