This is the sauce we make whenever I make prime rib.
1 cup heavy cream, whipped to soft peaks form
1 heaping tablespoon (or more to taste) freshly peeled, grated horseradish**
1 juice from one, whole fresh lemon
salt and pepper to taste
1/8 cup freshly chopped chives
Combine the whipped cream in a small bowl then gently fold in the additional ingredients. **If you don't have fresh horseradish you can use about 3 tablespoons of bottled, prepared horseradish which you've drained through a fine sieve to remove some of the vinegar flavor. Top the sauce with chopped fresh chives before serving.
This is a simple sour cream / mayonnaise version.
1/2 cup sour cream
1/2 cup mayonnaise
1 tablespoon prepare horseradish
1 teaspoon lemon juice
1 teaspoon Dijon mustard
1/4 teaspoon salt
1/4 teaspoon pepper
1/8 cup fresh chopped chives or parsley
Combine all ingredients in a small bowl except chives. Refrigerate until ready to use. Place the sauce in a serving dish and top with the fresh chopped chives or parsley.