Saltines
4 cups flour
1/2 tsp baking soda
1 tsp cream of tartar
1/2 cup fat
1 cup water
1 egg white
salt or sesame seeds
Combine flour, soda, and tartar. Cut in fat. Add water until it is the consistency of chapati dough and roll out flat. Cut into desired shape, brush with egg white, salt, and/or seeds. Bake on high heat until brown at the edges.
Omit the egg and add a bit more water to make Water Biscuits.