Green Goddess Salad Prep time: 10 mins Cook time: 10 mins Total time: 20 mins Serves: 6 Ingredients 1/2 avocado, peeled and pitted 3/4 cup nonfat buttermilk 2 tablespoons chopped fresh herbs, such as tarragon, sorrel and/or chives 2 teaspoons tarragon vinegar, or...