Green Goddess Salad Dressing

• 2 tbsp tarragon vinegar
• 3 cloves garlic, chopped 
• 1 egg yolk
• 2 tablespoons freshly squeezed lemon 
• 2 anchovy fillets
• 2 tsp chopped fresh tarragon
• 1 tblsp fresh flat-leaf parsley
• 4 Scallions, minced
• 1.5 Cups extra virgin olive oil
• 1/4 cup Fat Free sour cream
• Kosher Salt and freshly ground pepper to taste
  

Combine all ingredients except Sour Cream and Olive Oil in a blender. Run the blender and drizzle Olive Oil from the top into the dressings. Continue to blend.
Transfer the sauce to a bowl. Fold in the sour cream and season with salt and pepper. Refrigerate until ready to use.

Makes 2 cups.