Classic Reuben Sandwiches From: https://www.seriouseats.com/reuben-sandwich-corned-beef-rye-recipe#toc-wheres-the-beef
For the Russian Dressing: In a medium bowl, stir together mayonnaise, sour cream, ketchup, relish, lemon juice, and horseradish. Season dressing with salt and pepper and set aside.
For the Russian Dressing: In a medium bowl, stir together mayonnaise, sour cream, ketchup, relish, lemon juice, and horseradish. Season dressing with salt and pepper and set aside.