In-N-Out Burger secret sauce recipe. In-N-Out burger secret sauce is the best burger sauce on the market. Watch this video and learn how to make In-N-Out burger secret sauce at home.
Ingredients
1/2 cup mayonnaise
3 tablespoons ketchup
1/2 tablespoon white vinegar
1/2 tablespoon sugar
2 tablespoons sweet pickle relish
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