From Food Network Kitchens
2 cloves garlic
1/2 teaspoon kosher salt
1 cup prepared or homemade mayonnaise
1/4 to 1/3 cup buttermilk
2 tablespoons minced flat-leaf parsley leaves
2 tablespoons minced fresh chives
1 scallion, trimmed and thinly sliced
1 teaspoon white wine vinegar
Freshly ground black pepper
Mash the garlic and salt to a paste with the side of a chefs knife. In a medium bowl, whisk together the garlic, mayonnaise, 1/4 cup buttermilk, parsley, chives, scallion, vinegar and pepper to taste. If the sauce is very thick, thin the dressing with a couple tablespoons more of the buttermilk. Use immediately or store covered, in the refrigerator, for up to 3 days.
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Yield: about 1 1/3 cups
Prep Time: 15 minutes