A rich and flavorful dressing perfect for salads or as a dip.
Combine the mayonnaise, sour cream, and half-and-half in a mixing bowl.
Using a whisk ensures a smooth and creamy consistency.
Add the grated Parmesan cheese, garlic powder, Worcestershire sauce, and lemon juice to the bowl.
Grate the Parmesan cheese finely for better incorporation.
Stir in the white vinegar, salt, ground black pepper, and crushed peppercorns.
Taste the dressing and adjust the seasoning as needed.
Finely chop the white onion and mix it into the dressing.
For a smoother texture, blend the onion before adding.
Transfer the dressing to an airtight container and refrigerate for at least 24 hours before serving.
Chilling allows the flavors to meld together beautifully.
Serve the dressing chilled with your favorite salad or as a dip.
Garnish with a sprinkle of Parmesan cheese for presentation.