In a medium mixing bowl, whisk together the mayonnaise, sour cream, and buttermilk until the mixture is smooth and well combined.

Use a whisk (not a spoon) to break up any lumps and create a smooth, uniform texture. Whisk for about 30 seconds until it looks creamy and cohesive. If the mixture looks too thick, you can add a tablespoon more buttermilk to thin it out.

Stir in the onion powder, dried dill weed, and Beau Monde seasoning. Mix thoroughly to ensure even distribution of flavors.

Sprinkle the seasonings evenly over the creamy base and stir thoroughly using a spoon or spatula. Make sure there are no clumps of spices left unmixed. Scrape down the sides of the bowl as you mix.

If you prefer a slightly tangier dip, add a small dash of white vinegar and stir again.

Start with 1/4 teaspoon of white vinegar, stir it in, then taste. If desired, add a tiny bit more. Be cautious—too much can overpower the dip.

Cover the bowl and refrigerate the dip for at least 30 minutes to allow the flavors to develop and blend beautifully.

Transfer the dip to an airtight container or simply cover the mixing bowl with plastic wrap or a lid. Place it in the refrigerator and let it sit undisturbed for 30 minutes—or even better, up to 2 hours if you have time.

Serve cold with your favorite dippers—like fries, chicken tenders, veggies, or chips.

Give the dip a final stir before serving. Present it in a small serving bowl and surround it with dippers like:

Fresh-cut veggies (carrots, celery, bell peppers)

Potato chips or pretzels

Chicken strips or nuggets

Fried pickles or onion ring