Step 1

In a food processor or blender, process the buttermilk, garlic, pepper, chives and mint together until the herbs are minced and the mixture turns pale green. Add the mayonnaise and process just until smooth. If desired, thin with additional buttermilk to get the consistency you want. Taste and add salt if needed.

Step 2

Serve immediately or refrigerate, covered, up to 3 days.