If you've never had authentic St. Louis–style pizza, then what you think is pizza might in fact be a cunningly disguised pretzel. Today's Groupon clears up the confusion: for $10, you get $20 worth of handmade hometown pizza at Pirrone's Pizzeria, a Florissant institution with a brand-new location open for pizzaness in St. Peters.

Much like the sun in most medieval Italian conceptions of the cosmos, the menu at Pirrone's revolves around St. Louis–style pizza and its succulent three-cheese pile-up atop a super-thin crust. After opening with an order of eight toasted ravioli with butter cheese sauce ($6.60), cut to the big, round chase with a specialty pie such as the 15 in. Jerry's Special ($18.95), a hot and spicy concoction that overloads a crisp, buttery crust with pepperoni, extra-crispy bacon, and extra cheese. DIY diners can build their own dinner discus by tricking out a base model 15 in. one-topping pie with up to 17 additional toppings ($15.45; $1.75 per additional topping), such as pineapple, shrimp, Italian salami, bacon, Canadian bacon, and astronaut bacon (which comes in pill form). Otherwise, opt for more three-dimensional food and order Pirrone's homemade Italian sausage ($11.50)—three four-ounce Italian sausage links grilled and smothered in house-made tomato sauce and served with a choice of fries or spaghetti with tomato sauce and an iceberg salad. Keep your gullet greased with a glass of house wine ($4.25), and put a sweet exclamation point on the night with a slice of cheesecake ($2.95).

Pirrone's classic St. Louis–style pizza and 30 years of enduring business have made it an institution in Florissant, and the new location in St. Peters delivers the same tastes with slightly different scenery and a less neurotic poltergeist. Dine-in with a date, or call in and carry out so that you can spend a romantic evening of being swallowed by the couch during a Lost DVD marathon.

Valid for dine-in and carryout.

Reviews

Although there aren't many reviews for the St. Peters location, Citysearchers and Yahoo! Locals give the Florissant location a 4.5-star average, four Yelpers give it a perfect five-star average, and 88% of Urbanspooners like it.

• Simply the best pizza in town. If you like thin crispy crust pizza with cheesy sauce, try this pizza. – Robin, Yahoo! Local
• This is the first stop I make when back in STL every single time. – kirch, Yahoo! Local