Aleuromancy is a form of divination that was popular in ancient Greece. For a particular querent, relevant sentences or messages relating to the querent's question were written on very small pieces of paper. These small pieces of paper were then rolled up into balls of flour.
The balls of flour were then mixed up nine times and offered to the querent who would then choose a ball. This method was also used for generalization in so much that "messages" would be written and rolled in flour and then offered to anyone who was interested in a prediction of their future (rather than a specific querent/question).
This form of divination was thought to be presided over by the god Apollo and has fallen into disuse over the centuries.