About a year ago, founder Jared Allen sold Proof Bread to loyal customers Jon Przybyl and Amanda Abou-Eid. The husband-and-wife team have done their sensei proud, emerging as baking masters in their own right. The journey from starter to finished loaf of Proof sourdough lasts some 30 hours. That journey takes place in a Mesa garage filled with work stations, dusty light, and cooling racks. This sourdough has a crisp but chewy structure and the style's trademark mild tang. Long fermentation and great care give each loaf the spirit of grain fields — deeply complex, deeply comforting. You can find Proof products at several local farmers markets.