Hard Tack

Mix all the ingredients into a dough and press onto a greased cookie sheet to a thickness of ½ inch.

Bake in a preheated oven at 400°F (205°C) for half an hour. Don't cut now.

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).

Flip the crackers and return to the oven for another half hour.