INGREDIENTS
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1 1/2 lb lean (at least 80%) ground beef
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1 cup milk
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1 tablespoon Worcestershire sauce
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1/2 teaspoon salt
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1/2 teaspoon ground mustard
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1/4 teaspoon pepper
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1 egg
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3 slices bread, finely chopped (1 1/2 cups, lightly packed)
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1 small onion, chopped (1/4 cup)
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1/2 cup ketchup, chili sauce or barbecue sauce