Fresh lime juice provides a zesty citrus punch while chopped cilantro adds freshness to this ranch dressing.
In large bowl add Ranch Dressing packet (3.2 oz) to buttermilk. Mix well with wire whisk or electric mixer at low speed.
Add mayonnaise and continue mixing at low speed about 2 minutes until smooth.
Blend cilantro and lime juice in a food processor until pureed. This will give the dressing a light green color. Add to ranch and mix at low speed until combined.
Refrigerate 3-4 hours so dressing will thicken. Stir before using. Store in refrigerator.
NOTE: This dressing can be made "light" or "fat free" by substituting 3 qts. buttermilk and 1 qt. light or fat free mayonnaise.