Gravenstaun or Gravenstein: How To spell?

The word Gravenstaun is misspelled against Gravenstein, a noun meaning "A kind of fall apple, marked with streaks of deep red and orange, and of excellent flavor and quality."

Word contains consecutive vowels 'EI' in between alphabets gravenst & n is misspelled as 'AU'
Wrong Spelling:  gravenst-au-n 
Correct Spelling:  gravenst-ei-n 
Check more misspelled words of Gravenstein to spell it correct.