There are lots of "feather" bread or roll recipes, or those that use leftover mashed potatoes. This is an oldie, goody, and keeper! The key ingredient is not just the potato, but the potato WATER that the potato was boiled in. The starches help to create a light, fluffy bread or roll. This recipe is from The Farmer's Almanac. Just a side note: breads made without sugar will not brown. You will have a white roll, which, at one time, was a desirable trait (white, light & tender).