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| ground beef: 1 lb |
| onions: 1 (finely chopped) |
| celery: 2 stalks (finely chopped) |
| ketchup: 3/4 cup |
| light brown sugar (packed): 1 Tbl |
| distilled vinegar: 1 Tbl |
| worcestershire sauce: 1 Tbl |
| Dijon mustard: 1 tsp |
| salt: 1/2 tsp |
| black pepper: 1/4 tsp |
| hamburger buns: 4 buns |
Credit: Food.com