This funky Delmar Loop joint proves that a great crust can elevate a simple pizza above the ordinary. Pi adds cornmeal, which imbues the texture of the crust with a faint granular quality. The exterior is crisp and a lovely, summery golden brown, while the interior keeps a spongy softness that absorbs the flavors of the various toppings while retaining its own individual qualities. The deep-dish pizzas are excellent. You can build your own from the list of toppings or try one of the specialty pizzas: red onion, sun-dried tomato and artichoke make the "Bucktown" stand out. The restaurant's efforts to be environmentally friendly are commendable.