In Italy, kissing your fingertips is a gesture of happiness. At Mozzeria, where pizza, pasta and seasonally inspired small plates are prepared and served mostly by deaf staff, this simple gesture is innately understood. Pizzas are Neapolitan in style but celebrate the diversity of San Francisco, and of Mozzeria’s owners, Melody and Russ Stein. Roast duck with hoisin and spring onion is an homage to Melody’s Hong Kong roots, while the Bronx Bomber, loaded with coppa and soppressata, celebrates Russ’s New York heritage. But the radicchio pizza is the Bay Area standout. At first bite, the flavor of sweet spring pea and salty cheese gives way to the bitter tang of radicchio, before the double-umami thunder of Gorgonzola and truffle honey stamps an indelible impression on your palate. Use (Italian) American Sign Language: Press the center of your outstretched hand to your lips to throw your “bellissima!” to the chef.