Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
1/2       cup           mayonnaise 
1/2       cup           sour cream 
1/2       cup           buttermilk 
1         tablespoon    garlic powder 
1         teaspoon      dried oregano 
1         teaspoon      dried dill weed 
1         tablespoon    dried chives 
1         tablespoon    dried parsley 
2         tablespoons   grated Parmesan cheese 
1         dash          hot pepper sauce 
1         tablespoon    Worcestershire sauce 
1         teaspoon      ground white pepper 

Preparation:

Combine the mayonnaise, sour cream, buttermilk, garlic powder, oregano, dill weed, chives, parsley, parmesan cheese, hot sauce, Worcestershire sauce, pepper and refrigerate for at least 1/2 an hour. If the dressing is too thick, add a little extra buttermilk to thin.