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It's Only Food

Jack in the Box Onion Mayo Sauce

Updated: Oct 26, 2025


Jack in the Box Onion Mayo Sauce
Jack in the Box Onion Mayo Sauce




Jack in the Box Onion Mayo Sauce blends creamy mayonnaise with sweet onion for a smooth, savory flavor.  The sauce is mild yet flavorful, with a velvety consistency and a subtle onion aroma. It's pale and spreadable, often with flecks of onion.

Popular on burgers and chicken sandwiches, it adds a tasty boost without overpowering other flavors.












Jack in the Box Onion Mayo Sauce

Ingredients

  • ½ teaspoon onion powder

  • 4 Tablespoons mayo

  • ¼ teaspoon mustard powder

  • 2 teaspoons sugar

  • 1 Tablespoon white vinegar


Method

  1. Mix all the ingredients in a large bowl. Refrigerate in a sealed container for up to 2 weeks.

  2. Enjoy on burgers, chicken sandwiches, or as a dip for French fries, onion rings, or chicken fingers




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