Ranch Dressing Plus Buttermilk Substitute

I made a salad designed to be served with ranch, but found out we hardly had any Ranch left. Thank you for the age of the internet it takes just a few seconds to find a recipe.

I used one found here altered a little bit per a customer review - http://allrecipes.com/Recipe/ranch-dressing-ii/detail.aspx

1/2 cup mayonnaise

1/2 cup sour cream

1/2 cup buttermilk

1/2 teaspoon dried chives (didn't have any. Just used dried onion flakes)

1/2 teaspoon dried parsley

1/2 teaspoon dried dill weed

1/2 teaspoon garlic powder

1/4 teaspoon onion powder

1/8 teaspoon salt

1/8 teaspoon ground black pepper

1/4 tsp vegetable oil

Directions

1. In a large bowl, whisk together the mayonnaise, sour cream, buttermilk, chives, parsley, dill, garlic powder, onion powder, salt and pepper. Cover and refrigerate for 30 minutes before serving.

It turned out pretty good and was easy enough. I didn't have buttermilk though either so did this simple substitute -

3/4 cup plain yogurt

1/4 cup milk

Of course scaling down to fit my recipe's need