To make an easy-to-prepare ranch dressing, you need 1 to 2 cups sour cream, 1/2 teaspoon dill, 1/2 teaspoon garlic powder, 2 cups mayonnaise and 1/2 teaspoon onion powder. Also gather 1/2 teaspoon salt, 1/2 teaspoon pepper, 1/2 cup milk and 1/2 teaspoon parsley. Combine all the ingredients.
When choosing ingredients, you may opt for either fresh or dried herbs, though fresh varieties likely produce a more vibrant flavor. Additionally, you may substitute the onion powder with fresh scallion or green onion for increased bite in the dressing. Regarding the milk, 1/2 cup is the minimum amount, but you can add up to a full cup if you want to decrease the thickness of the final preparation. Make sure to use real mayonnaise, not an alternative such as Miracle Whip.
Add all the ingredients together in a large mixing bowl, whisk until thoroughly combined, and then transfer the contents to an easily sealable container. Next, place it inside the refrigerator, where it must rest for several hours before serving. If the final dressing remains too thick after cooling, stir in some more milk, a little at a time, until achieving the desired consistency. For a classic twist, substitute the regular milk with buttermilk; this gives ranch dressing its trademark sourness. For a touch of heat, consider adding a dash of Cayenne pepper or hot sauce.