Step 1

Place all ingredients in a medium bowl, starting with just ¼ cup of the buttermilk. Whisk until well combined. Check the consistency and whisk in more buttermilk as needed to thin the dressing. Taste and adjust seasonings as needed.

Step 2

Store in an airtight container in the refrigerator. The dressing will last in the refrigerator for about one week, or as long as the individual ingredients (yogurt, sour cream, buttermilk) would stay fresh.