Every week, thousands of tortillas — both corn and flour — are produced at La Sonorense Tortilla Factory in south Phoenix, many of them headed straight to the kitchens of the region's top Mexican restaurants. Why are the tortillas at La Sonorense so highly coveted? They are produced with tried-and-true recipes that have stood the test of time. The hallmark of La Sonorense is the factory's buttery, papery thin flour tortillas, which contain only a handful of ingredients — including flour, shortening, water, and salt — and pressed to a thin yet pliant consistency. They are marvelous, as are the factory's signature yellow corn tortillas. Swing by the friendly storefront early in the morning, when you can pick up a pack of tortillas hot off the conveyor belt.