Hard Tack

Steps

1. Mix all the ingredients into a dough and press onto a greased cookie sheet to a thickness of ½ inch.
2. Bake in a preheated oven at 400°F (205°C) for half an hour. Don't cut now.
3. Remove from oven, and cut dough into 3-inch squares. Punch four rows of holes, four holes per row into the dough (a fork works nicely).
4. Flip the crackers and return to the oven for another half hour.