In a medium-sized mixing bowl, whisk together the sour cream, ¼ cup of mayonnaise, 2 tablespoons of milk, dried dill, lemon juice, vinegar, garlic powder, onion powder, ¼ teaspoon of salt, and a few grinds of fresh black pepper. Stir until the mixture achieves a smooth and creamy consistency.

For a thicker dressing, increase the amount of mayonnaise. If a thinner consistency is preferred, gradually add more milk until the desired texture is reached.

Taste and adjust the seasoning by adding more salt or black pepper as needed. If using, gently fold in the freshly chopped chives and dill to enhance the flavor with a bright, herbaceous note.

Use immediately as a salad dressing, dipping sauce, or drizzle over roasted vegetables. Store in an airtight container in the refrigerator for up to five days.