Avocado Lime Ranch Dressing

I had a Grilled Chicken Market salad from Chick-fil-a and it outstanding with this dressing.




1 avocado
1/2 cup mayonnaise
1/2 cup buttermilk
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon salt
1 tablespoon lime juice
1 tablespoon vinegar

Scoop avocado from the peel and mash well. Mix, in a bowl or pint jar with mayonnaise and buttermilk.
Add spices and lime juice. Stir well.