Tonya's Terrific Sloppy Joes
Ingredients:
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2 pounds ground beef
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½ cup chopped onion
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¼ cup chopped celery
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7 ounces ketchup
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1 tablespoon brown sugar
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1 ½ teaspoons Worcestershire sauce
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1 teaspoon vinegar
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¼ teaspoon dry mustard powder
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⅛ teaspoon lemon juice
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8 white or wheat hamburger buns