Lunch or Dinner Entrees for Two (up to $25 each) at one of Duke's 6 Seattle area locations.    As Duke puts it, he only features "100% All natural Clam Chowder.  The only one in the world.  Not one chemical or preservative. Wild Alaska Seafood.  All of our Salmon, Halibut and Cod is from the pristine waters of Alaska. All natural chicken. Wild Dungeness Crab. Wild Gulf Prawns from the Gulf of Mexico.  Plump, juicy and wild…."