We happened to cruise into the town of Fulks Run, in northwestern Virginia, on what devotees know as Fried Ham Friday. What luck! One day each week, the big table at the back of Fulks Run Grocery, a small provisions store, is cleared so that people can sit down and eat sandwiches at what normally serves as the ham shipping department for Turner Ham House. The legendary hams, made by Ron Turner using his great-grandfather's formula, are dry-cured with sugar, salt, and saltpeter. They come enveloped in a fragrant cloud of titillating porcine perfume, and they deliver the exquisite salty-sweet punch for which Virginia hams are famous. On Fridays, nickel-thick slices are first soaked in water to mellow their intensity; then they are lightly breaded and fried crisp in an…