We used to eat at Tastee Inn & Out in Lincoln, NE or B & G's in Omaha, NE. My mother got this recipe from the newspaper years ago. One of our favorites to make for game day or any day! Enjoy! These are also the same sandwiches that Roseanne used to make on her show! YUM!
Place ground beef in big pot like a dutch oven. Combine ketchup, mustard, horseradish, Worcestershire & salt in a 1 cup glass measuring cup. Stir it into beef. Fill the same cup with warm water and add to beef. Use same cup to measure ground onion; add to beef. Stir in black pepper. Cook beef on low heat stirring constantly or until meat is in fine pieces. Increase heat slowly until mixture boils. Boil 25 minutes, stirring every few minutes to avoid sticking. Use slotted spoon and dip meat onto hamburger buns.