Hot dogs covered with a tangy meat sauce were originally sold by food vendors at New York's famous Coney Island Amusement Park.
Here's a recipe for this tasty hot dog topping.

1-1/2 lbs. lean ground beef 1 large onion - finely chopped 32 ozs. tomato puree 2 tsp. prepared yellow mustard (such as French's) 1 cup light brown sugar 2 T. apple cider vinegar 1-1/2 tsp. chili powder 1 tsp. celery seed 2 tsp. salt 1/2 tsp. black pepper