Pizza's worldwide popularity can be attributed to its unique combination of cheese, carbs, and hands-on fraction tutoring. Teach your appetite a lesson with today's Groupon: for $10, you get $20 worth of pizza and pasta at Salvatore of Soho on Hylan Boulevard in Staten Island.

The nimble chefs at Salvatore of Soho smother handmade Neapolitan pizza crusts in fresh mozzarella cheese, San Marzano tomatoes, and organic herbs before warming pies in a custom-built coal-fired brick oven to craft a classic menu of Italian fare. Deft dough handlers coat the customer-favorite clam pie in hand-shucked clams, imported oregano, and freshly grated romano cheese ($19.95 for a small, $29.95 for a large), and they slather the vodka pie in its titular creamy tomato sauce and a cocktail olive garnish speared on a toothpick ($11.95 for a small, $22.95 for a large). Diners can also fork up individualized carbs with pastas such as the lasagna ($14.95) or dive into a vat of cheesy baked manicotti ($12.95) to eliminate pasta-deficiency headaches. Salvatore of Soho’s 1950s atmosphere allows customers to soak in the aura of simpler times without sitting through a Leave It to Beaver marathon.