We’re Brittany & Brennan Grosvenor, two Chicagoans who have made Oregon their new home. We’ve brought our pups along for the ride and can’t wait share our Chicago style of Za slinging with the PNW.

Proof is a Midwest-inspired, tavern-style pizza company committed to providing a friendly and approachable atmosphere that enables the community to learn about and experience flavors and styles typically sought after throughout the Chicagoland region.