Gravenstin or Gravenstein: How To spell?

The word Gravenstin 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 'I' as letter 'E' is phonetically igno
Wrong Spelling:  gravenst-i-n 
Correct Spelling:  gravenst-ei-n 
Find more wrongly spelled words of Gravenstein to spell it well.