Notes: Use white flour for 100 year shelf life or dark whole grain flour for 50 year shelf life. Any kind of salt will do but sea salt or pink salt is best, but iodine salt will make a food to protect against goiters.
4 cups flour, 2 cups water, 4 teaspoons salt
Instructions: mix 2 cups flour with 2 cups water and 4 teaspoons of salt and mix together with large spoon. Once mixed add the last 2 cups of flour and mix together to a dough consistency with hands adding flour as needed if the dough is sticky or water if it is dry.
Roll out to 1/8th inch thickness and use cookie cutter or a round glass to make small biscuits or cut into squares with a knife to make squares about 4 inches in size. Use a fork or skewer to put six or more holes in each biscuit all the way through to the other side.
Bake at 175 degrees fahrenheit for 1 hour and then flip them over and do it again for a total of 2 hours baking time.
Store in mason jar with moisture absorbers for almost infinite shelf life. Because they are hard you can soak in water, coffee, tea, milk, or fry in bacon grease when you want to eat them.