Mayonaise or Mayonnaise: How To spell?
The word Mayonaise is misspelled against Mayonnaise, a noun meaning "A sauce compounded of raw yolks of eggs beaten up with olive oil to the consistency of a sirup, and seasoned with vinegar, pepper, salt, etc.; -- used in dressing salads, fish, etc. Also, a dish dressed with this sauce."
Mayonnaise has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings mayo & aise which should not be misspelled with single 'N'
Wrong Spelling:  mayo-n-aise  Correct Spelling:  mayo-nn-aise 
Find more incorrect spellings of Mayonnaise to spell right way.