- 1 small garlic clove
 - Rounded 1/4 teaspoon salt
 - 2/3 cup well-shaken buttermilk
 - 1/3 cup mayonnaise
 - 2 tablespoons finely chopped fresh basil
 
- Mince garlic and mash to a paste with salt using a large heavy knife.
 - Whisk together buttermilk, mayonnaise, basil, and garlic paste in a small bowl. Chill, covered, 1 hour to allow flavors to develop.