Measure ingredients into a blender or mini food processor. Blend/pulse a few times until slightly broken down and well combined. Transfer the mixture to a small jar or other airtight container. Shake the seasoning mix well before measuring it out.
Use 1 ½ tablespoons Homemade Ranch Dressing Mix as a substitute for a 1-ounce store-bought packet in recipes calling for dry ranch seasoning.
The Nutrition Facts are for 1 ½ tablespoon dressing mix (the equivalent of one store-bought "packet"), which makes one batch of dressing.
TO MAKE A BATCH OF HOMEMADE BUTTERMILK RANCH DRESSING:
Whisk together ½ cup mayonnaise, ½ cup sour cream, ½ cup buttermilk, ½ teaspoon apple cider vinegar, ½ teaspoon Worcestershire sauce, and 1 ½ tablespoons Homemade Ranch Dressing Mix; stir until until well combined.
Cover and refrigerate for at least 4 hours (preferably 8 hours or overnight).
Add additional salt and/or pepper to taste before serving, if desired. If consistency is too thick, thin out the dressing with a splash of additional milk or buttermilk.