Nebraska is famous for beef, corn, and college football. But one of the country's most surprising fine-dining stories is unfolding in Omaha, where a chef is making people rethink what great sushi and sashimi can look like far from either coast. The restaurant is Yoshitomo, with its tiny companion omakase counter, Ota, in Omaha's Benson neighborhood. The chef is David Utterback, a self-taught sushi obsessive who has turned a landlocked Midwestern [...]