Deriving its name from the Italian word meaning a restaurant serving wine and simple food, “osteria,” and the Italian phrase meaning to sit and relax, “posto,” Osteria Posto offers guests an upscale but approachable take on today’s Italian steakhouse. Chef Robert Fathman was in studio this morning and brought along a tremendous spread of delicious items from the restaurant. Visit them at Waltham’s technology hub, 99 3rd Ave.