Ulage or Ullage: How To spell?

The word Ulage is misspelled against Ullage, a noun meaning "The amount which a vessel, as a cask, of liquor lacks of being full; wantage; deficiency."

Ullage has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings u & age which should not be misspelled with single 'L'
Wrong Spelling:  u-l-age 
Correct Spelling:  u-ll-age 
Explore spell check of Ullage to spell without errors.