Cookbook Watch

Those of us who still refer to our battered copies of Jane and Michael Stern’s “Roadfood” books have been waiting several years for an updated edition. Finally, the “Two for the Road” columnists for Gourmet magazine have come out with a revision, this time called “Eat Your Way Across the U.S.A.” (Broadway Books, $15). It’s got entries on the country’s best diners, barbecue stands, cafeterias and more--even a few recipes.