My favorite, go-to, all-purpose sauce is a mustard horseradish recipe from the Barefoot Contessa—I always keep a container in my refrigerator. It’s delicious with beef, pork and fish and also makes the perfect sandwich spread. Serve this sauce at a party with sliced tenderloin on Sister Schubert’s dinner yeast rolls, and your guests will be impressed.
Tip: For a lighter version, use low-fat mayo, or combine with whole mayo. I don't recommend fat-free.