I love making my own salad dressings and I'm always looking for new ones. This delicious dressing recipe came from www.horseradish.org It's perfect on a green salad served along side of a nice, juicy steak!
In a blender or food processor combine buttermilk, mayonnaise, scallions, basil, parsley, lemon juice and horseradish. Blend well until smooth. Add salt and pepper to taste, process briefly to blend flavors.