Dining in Walla Walla blossomed from an influx of mining transplants in the late 1800s. Within decades, a roadhouse called the Oasis boasted a seventy-two-ounce slab of beef, and the old Pastime Caf? opened at 5:30 a.m. with white toast and whiskey for breakfast. In the early 1950s, Ysidro Berrones opened one of the valley's first Mexican restaurants, the El Sombrero Tortilla Factory and Caf?. Owner of Denney's Hi-Spot for two decades, Joe Denney...