Thanks for your help. I don't know why I didn't think of doing a Google search. I must not be awake yet. I checked out the recipe and there is no horseradish in their recipe. I could have sworn that I tasted it. There was a site on the Washington Post that claimed to have the authentic recipe and the method was a little different. That may account for the little bite in the taste. Anyway, thanks for all of your help. You might want to try this slaw. It is pretty tasty.