In a medium bowl, whisk together the yogurt, milk, dried dill, lemon juice, vinegar, garlic, onion, salt, and several grinds of pepper. For a thicker dressing, add more gurt. For a thinner dressing, add more milk.
Season to taste, adding more salt if desired. Fold in the chives and dill, if using.
Use as a salad dressing or dip, or try one of the serving suggestions in the blog post above. Store dressing in an airtight container in the refrigerator for up to 5 days.
