Put crackers through blender on high speed until powdered. Add parsley, minced onion and dill weed. Blend again until powdered. Dump into bowl. Stir in onion salt, garlic salt, onion powder, and garlic powder. Put into a container with a tight fitting lid. You can store this dry mixture at room temperature for up to 1 year.
To mix dressing, combine 1 tbs. Dry mix , with 1 c. Mayo, and 1 c. Buttermilk. Whisk till smooth, chill to thicken. Makes -42- 1 tbs. Servings