Gold Dig #56 Grouped together as “Mozzaplex” on Jonathan Gold’s 101 Best Restaurants list are these four Italian eateries – Pizzeria Mozza (pizza as you might have guessed), Osteria Mozza (more formal restaurant), Chi Spacca (meat-focused), and Mozza2Go (takeout counter). We tried Osteria Mozza, which was packed even on a weeknight, with every seat at…