What food item, eaten by thousands of soldiers, needed only two ingredients?
Answer - Hardtack
Here is the recipe
Flour and Water – That’s it!
Mix to a consistency you like and can work with – anywhere from three to six parts flour to one part water
Roll out and cut into ½ inch thick four by four squares
Poke holes into each square - some old timers said 13 in each square, nowadays (does anyone really use the word nowadays anymore not sure it is a real word and my spell checker is not sure either) it is four rows of four, believe that makes 16 – use something like a chop stick or end of an artist’s paint brush to poke holes
Bake at 350 degrees twenty to twenty-five minutes flip them and bake the other side.
There you have it – shelf life of 50 years
Modern hardtack often contains salt but salt attracts moisture and brings mold. Mold means no more shelf life.