Before baking, preheat oven to 325°F / 160°C /Gas Mark 3
Stir together the flours, corn meal, salt, and sugar in a large bowl or in the food processor. Cut in the shortening until the mixture resembles coarse meal. Blend in enough of the water to form a dough that will hold together.
Divide the dough into 2 portions for rolling. Roll out to 1/16 to 1/8 inch. Cut into 2-inch shapes and place on an ungreased baking sheet. Prick each one 2 or 3 times with a fork to prevent air pockets.
Bake for 15 minutes. Turn over and continue baking another 10 to 15 minutes or until medium brown. Cool on a rack.
Eat as a snack or serve with a hearty bowl of soup.