Plot: Andrew Zimmern visits Washington, DC, for Salvadoran favorites, food trucks that feed hordes of hungry federal workers, and takes a trip back into history to taste what our forefathers ate. Whether it's a blackened snakehead sandwich made in a boat on the Potomac, peanut butter paired with foie gras, or Scrapple at a neighborhood grill known for its soul food, DC is a place where historical favorites and new innovations come together to create a variety of unexpected tastes