Hard Tack Bread Recipe from the Civil War
Ingredients:
5 cups flour
1 cup water
1 tbs salt
Mix all ingredients thoroughly. Knead dough and roll out till it is 1/2 inch thick. Cut dough into 3x3 squares, and poke a 3x3 series of holes in the center, evenly spaced. Bake in preheated oven, 425 degrees
until dry and lightly golden brown