Pi Pizzeria

Even though Pi is known for their cornmeal deep-dish pizza, they also have unique specialty pies that feature items such as the Cubano with slow-cooked pork shoulder, country ham, kosher pickle, swiss, and yellow mustard. The St. Louis-based chain first gained notoriety after Barack Obama supposedly claimed Pi as his favorite pizza place. The ingredients are sourced locally, and they claim to have built their brand upon the promise of minimizing its carbon footprint through sustainable purchases and practices.