• 13 Ingredients
  • 1 red onion, sliced
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  • 1 teaspoon kosher salt
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  • 4 hamburger rolls
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  • 2 tablespoons brown spicy mustard
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  • 1/2 cup olive oil
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  • Show all (13)
  • Nutrition 100% match
  • Calories per gram: 1.3
  • Total fat: High
  • Show all