NY Times Green Cilantro Sauce

Name: NY Times Green Cilantro Sauce
Cuisine: American
Ingredients: Yield:; About 2 cups; 1packed cup basil leaves; ½packed cup parsley leaves and tender stems; ½packed cup chopped chives; 2garlic cloves, peeled and smashed; Pinch of black pepper; ¼cup plain Greek yogurt or sour cream; ⅓cup extra-virgin olive oil; 1½teaspoons finely grated lemon zest; ¼teaspoon kosher salt (Diamond Crystal), plus more to taste