I start by adding the sour cream, mayonnaise, and buttermilk to a medium mixing bowl. These three ingredients create that classic creamy ranch texture. Whisking them together first makes it easier to evenly distribute the seasonings later.
Next, I sprinkle in the dried dill, garlic powder, onion powder, salt, and a few good grinds of black pepper. I also add the lemon juice and vinegar at this point. Whisking everything together thoroughly ensures every bite has a balanced flavor.
This is where I make the dressing my own. If I want it thicker for dipping, I add a little extra mayonnaise. If I want a thinner consistency for drizzling over salad, I stir in a bit more buttermilk or milk until it reaches the texture I like.
Before moving on, I always give the dressing a taste. Sometimes it needs an extra pinch of salt, or a touch more pepper. This step is key because it lets me tailor the flavor exactly to my preference.
If I'm using fresh chives and dill, I fold them gently at the end. This keeps their bright color and fresh flavor intact instead of getting muted by whisking too vigorously.
Finally, I cover the bowl and pop it in the fridge for at least 15-20 minutes before serving. Chilling helps the flavors meld together and gives the dressing an even better texture.