approximately 1/4 cup buttermilk to thin dressing outoptional
Make paste out of the garlic by mashing the clove with the side of a large knife, adding salt on top, and using a fork to mash together until a past-like consistency. Add to medium-sized bowl.
Add sour cream, herbs, pepper, vinegar, oil, and cayenne pepper to the bowl. Mix.
At this point, you will have a thick ranch dip. To make a thinner dressing, add buttermilk a little at a time, stirring constantly, until you have reached the desired thickness.
If you don't have buttermilk, you can use regular whole milk or a mixture of whole milk and plain yogurt as a substitution.
The provided nutrition information does not include any added sodium from seasoning to taste, any optional ingredients, and it does not take brands into account. Feel free to calculate it yourself using this calculator or by adding the recipe to Yummly.