Hardtack

[Draggingtree]

Hardtack 

2 cups flour
1/2 tablespoon salt (optional)
1/2 to 3/4 cup water

Preheat oven to 250 degrees F. Combine flour with salt in a mixing bowl. Add water and mix with hands until the dough comes together. Roll out on a table to about 1/3 inch thickness. Use a knife to cut 3×3 squares from the dough. Place on baking sheet, and use a dowel (see note above) to make 16 evenly-spaced holes in each square. Bake for at least four hours, turning over once half-way through baking. Cool on a rack in a dry room.