Some of the best cuisine in Colorado can be enjoyed at a diversity of historic locales, from classic diners, to dude ranches, to old hotels, and even a former filling station. Please your palate as well as your appetite for historical trivia as you prepare chilled zucchini soup from Denver's Castle Marne, Spanish flan from the Twin Owls Steakhouse in Estes Park, coconut barbecue sauce from the Laramie River Ranch in North Park, or seafood gumbo from...