
¾ cup plain Greek yogurt
½ cup buttermilk
1 avocado, seeded, peeled and cut up
2 tablespoons finely chopped Italian parsley, plus additional for garnish
2 tablespoons finely chopped fresh dill, plus additional for garnish
1 tablespoon finely chopped fresh chives
1 tablespoon fresh lime juice
1 clove garlic, peeled
½ teaspoon coarse kosher salt
½ teaspoon coarse-ground black pepper, plus additional for garnish