I got this recipe from the Barefoot Contessa. It is a salad dressing that originated in France, but has become extremely popular on the West Coast. It has so much flavor! I like to serve it with just a simple garden salad.
1 cup good mayonnaise
1 cup chopped scallions, white and green parts (6 to 7 scallions)
1 cup chopped fresh basil leaves
1/4 cup freshly squeezed lemon juice
2 teaspoons chopped garlic (2 cloves)
2 teaspoons anchovy paste
2 teaspoons kosher salt
1 teaspoon freshly ground black pepper
1 cup sour cream
Place the mayonnaise, scallions, basil, lemon juice, garlic, anchovy paste, salt and pepper in a blender and blend until smooth. Add the sour cream and process just until blended. (If not using immediately, refrigerate the dressing until ready to serve.