Traditionally these are eaten with mustard and dill pickles, we had them with coleslaw and that was a great combination. I'll have to try them with pickles next time.
Loose Meat Sandwiches adapted from food.com
2 lbs lean hamburger meat
1 extra large sweet onion, chopped
1/4 cup yellow mustard
1/4 cup vinegar (we prefer apple cider vinegar)
1/4 cup sugar
Sprinkle seasoning salt in bottom of skillet and throw in chopped onion and hamburger meat. Fry up the meat and onion while chopping up the meat to make it small like for Sloppy Joes. Drain off any fat. Aadd mustard, vinegar and sugar. Heat it through till sugar is dissolved. IF you want a little more tang add just 1-2 tablespoons more vinegar to your liking. Serve on your favorite hamburger bun toasted.