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In a mixing bowl, whisk together buttermilk, mayonnaise, and sour cream until smooth.
Add garlic powder, onion powder, black pepper, salt, dill, parsley, and lemon juice or vinegar (if using).
Whisk again until all ingredients are fully incorporated.
Taste and adjust seasoning if needed.
Chill for at least 30 minutes before serving for best flavor.
Serving and Storage Tips
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