Stir together all ingredients, and store in an airtight container up to 6 months.
Herbed Salad Dressing: Whisk together 2 tablespoons Salad Dressing Mix, 1/2 cup mayonnaise, and 1/2 cup buttermilk or sour cream. Chill at least 2 hours. Serve over mixed salad greens or as a vegetable dip.