Would you like to try some hardtack? It's very easy to make and here's the recipe:
2 cups of flour
1/2 to 3/4 cup water
1 tablespoon of Crisco or vegetable fat
6 pinches of salt
Mix the ingredients together into a stiff batter, knead several times, and spread the dough out flat to a thickness of 1/2 inch on a non-greased cookie sheet. Bake for one-half an hour at 400 degrees. Remove from oven, cut dough into 3-inch squares, and punch four rows of holes, four holes per row into the dough. Turn dough over, return to the oven and bake another one-half hour. Turn oven off and leave the door closed. Leave the hardtack in the oven until cool. Remove and enjoy! (And make sure your parents try some!)