I think they were eating moldy rye bread. Lots of interesting commonalities with the Bell Witch and the events surrounding the Salem Witch trials.
I would agree except for the reports from folks that didn't live in the area and weren't sharing their food. Andrew Jackson and his group were contacted by "it" prior to arriving at the Bell House.
From Bellwitch.org:
John Bell, Jr. and Jesse Bell fought under General Andrew Jackson in the Battle of New Orleans, and had developed a good rapport with him. In 1819, Jackson got word of the disturbances at the Bell home and decided to pay a personal visit. Jackson and his entourage, consisting of several men and a large wagon, journeyed from Nashville to the Bell home. As the entourage approached the Bell property, the wagon suddenly stopped. The horses tried pulling but to no avail--the wagon simply would not move.
After several minutes of cursing and trying to get the wagon to move, Jackson exclaimed that it must have been the "witch." As soon as Jackson uttered these words, an unidentified female voice spoke, telling Jackson and his men that they could proceed, and that "she" would see them again later that evening. The men were finally allowed to continue.
Chris