Once you've made these corn tortillas, you'll never settle for the dried-out, bland commercial varieties. While you can make tortillas without a tortilla press, or comal, it's strongly recommended you use one. They are inexpensive and widely available at specialty kitchen stores. Alternatively, press the dough between two flat plates.
This foolproof dough recipe makes enough for three 1-lb pizzas. (A typical recipe calls for one pound.) Wrap the leftover dough balls in plastic and freeze for up to three months. You can substitute spelt flour, a lower-glycemic alternative, for the total combined amount of flour and wheat germ.