Place sieve, lined with damp paper towel or damp cheese cloth, into a bowl. Pour plain yogurt into sieve. Cover with plastic wrap. Put into refrigerator to drain overnight.
In a medium sized mixing bowl, stir together yogurt, seasoning sale, garlic, dill weed and onion powder.
Mix until well blended
Transfer into a plastic container with tight-fitting lid. Can be stored in the refrigerator for up to one week.