Secret ingredient keeps cinnamon rolls moist

There are few more axiomatic statements than this: Cinnamon rolls are delicious. Consider the success of Cinnabon, the processed-pastry mega-chain whose 880-calorie behemoths tempt weary mall patrons and air travelers at 770 locations worldwide. Each roll from Cinnabon is, as Louis C.K. memorably put it, “a 6-foot high, cinnamon-swirled cake made for one fat man.”