Whisk together until all the ingredients are well blended.
Transfer the mix to an airtight container or a spice jar.
Store in a cool, dry place for up to 6 months.
To Make Ranch Dressing:
In a medium bowl, combine 2 tablespoons of the ranch dressing mix with 1 cup (240 ml) of mayonnaise and ¼-½ cup (60-120 ml) of buttermilk.
Whisk until smooth and well combined.
Taste and adjust the seasoning if needed.
Refrigerate for at least 30 minutes before serving to allow the flavors to meld.
Notes
The calories listed are an approximation based on the ingredients in the recipe card and a serving size of 2 tablespoons of dry seasoning mix. Actual calories will vary.