Hi! I have some roast beef I'm getting ready to slap onto a bun and would love to spread some horseradish sauce on it. However, I have no sour cream and despite all of my Googling and searching on here, I cannot find a recipe with a substitute (simple). Could I leave out the s.c. and use mayo. and general ingredients? I'm afraid straight horseradish would have too much of a bite for my taste buds, but fear the sandwich will be lacking without some kind of hr sauce. Can anyone please help? In advance, thanks so much for any advice you pros could provide! I really appreciate it.