Whisk together the mayonnaise and buttermilk in a medium-sized bowl until smooth and well combined
Sprinkle the ranch dressing mix into the bowl with the mayonnaise and buttermilk mixture. Stir well to ensure no clumps remain and the mix is fully incorporated
Add the black pepper, garlic powder, onion powder, paprika, and cayenne pepper to the bowl.
Whisk all the ingredients together until the spices are evenly distributed throughout the dressing.
Transfer the dressing to a jar or container with a tight-fitting lid. Refrigerate for at least 30 minutes before serving, allowing the flavors to come together
Give the ranch dressing a good stir or shake before serving. Use it as a dressing for salads, a dip for veggies and snacks, or as a condiment for sandwiches and burgers.