In-N-Out’s spread that comes on their Animal-style burger is a signature recipe and hasn’t changed since 1948. Well guess what, In-N-Out? We don’t think Thousand Island dressing has changed much since then, either. In all seriousness, though, it’s held by popular belief that their spread is simply Thousand Island. Even copycat guru Todd Wilbur thinks so. To give it a bit of sparkle beyond a store-bought bottle, we created our own replica of the sauce that’s key to achieving the spread found on In-N-Out’s Animal-style burger.
In a small bowl, combine all of the ingredients together and season with salt and pepper to taste. Refrigerate overnight before using.