Mountain lion barbacoa. Margarita's yam souffl . Pastel de Choclo, a.k.a. Rodeo Pie. And for dessert, perhaps, Miss Ruby Cupcakes. These are but a few of the gustatory memories of John Weston that waft us on a poignant journey into the past in the company of a gifted writer and unabashed bon vivant. The place is Skull Valley in central Arizona, the time the 1930s. Taking food as his theme, Weston paints an instructive and often...