green goddess dressing recipe

Ingredients: 1 cup mayonnaise 1/2 cup sour cream or Greek yogurt 1/4 cup chopped fresh parsley 1/4 cup chopped fresh chives 1/4 cup chopped fresh tarragon 2 tablespoons lemon juice 2 tablespoons chopped green onions (white and green parts) 2 anchovy fillets (or 1 tablespoon anchovy paste) 1 small clove garlic, minced 1/4 teaspoon salt