Green Goddess Dressing

Recipe from My Kitchen Cafe. This dressing goes great with this salad.

INGREDIENTS
1/2 cup mayonnaise
1/2 cup sour cream
2 tablespoons low-fat buttermilk
1 tablespoon white wine vinegar
1 teaspoon Worcestershire sauce
1 bunch chives, coarsely chopped (about 1/4 to 1/3 cup)
2 green onions, white and green parts, cut into thick chunks
2 tablespoons chopped fresh cilantro
2 tablespoons chopped fresh flat-leaf parsley
1 teaspoon sugar
1 teaspoon coarse or Kosher salt
1/2 teaspoon freshly ground black pepper
1 pinch cayenne pepper (optional)

DIRECTIONS
For the dressing, combine all the dressing ingredients together in a blender. Process until smooth. Thin with additional buttermilk (adding it one teaspoon at a time), if desired. Store the dressing in an airtight container in the refrigerator for up to 3 days.

*This dressing is best made up a few hours or a day beforehand to let the flavors blend.