Arby's Horsey Sauce Recipe
creamed horseradish or 2 tablespoons fresh horseradish
In a small bowl combine the mayonnaise, sugar, creamed horseradish, and salt. Stir until well combined.
Allow the sauce to rest in a covered container in the refrigerator for at least 1 hour. For optimal results allow resting overnight before serving.
The longer you can let the sauce rest, the better, but do be sure to use it within 5 to 7 days.