Dresing or Dressing: How To spell?
The word Dresing is misspelled against Dressing, a noun meaning "A preparation to fit food for use; a condiment; as, a dressing for salad."
Dressing has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings dre & ing which should not be misspelled with single 'S'
Wrong Spelling:  dre-s-ing  Correct Spelling:  dre-ss-ing 
Find more wrongly spelled words of Dressing to spell it well.