Previously I mostly just thought of hardtack as being something eaten by Civil War soldiers. It actually goes back to the time of the Egyptians, used by sailors. The good thing about hardtack (from a sailor or Civil War perspective) is that it can last for years if it stays dry and is kept away from bugs and such. It is light and easy to transport (think backpacking) but is dense, so it holds a lot of nutrition.
I have wanted to make some for about a year now. I finally got around to trying it. Turns out, it's really easy (and cheap) to make. In fact, you only need three ingredients.
4 1/2 cups flour
2 cups water
2 1/2 tsp. salt
Mix all ingredients and then roll out on a floured board into a rectangle of about 1/2 inch thickness. Cut into smaller squares and poke holes in each one with a fork on both sides.
Readers, would you want to try hardtack?