In Mark Tulley's pamphlet series "The Packet", he says that nothing other than flour, water, and salt should be used if you want the biscuit to stay mold-free. I have referenced other recipes and they use sugar, honey, baking soda, etc in their recipes. Evidently, these are made to be eaten soon after making? Also, he says the 18th century biscuits were ~4" in diameter and about 5/8" thick whereas the Civil War variety are said to be about 3" square. Anyone know approximately when the change may have been made? I'm thinking of making some at the next rendy we go to and want to try each type.