In this part of Mexico, corn tortillas are much more common than flour ones, and they are made in a press, made from either metal or wood. I have two tortilla presses, but don't make them often, because fresh tortillas are so plentiful. Every corner store has a plastic cooler just inside the door that is full of warm, fresh tortillas, either half kilo or full kilo, wrapped in paper. A kilo (2.2 pounds) costs about 9 pesos (around 60 cents US). They are delivered by the tortilleria twice a day - the delivery guy just switches out the coolers. Very clever. You usually get flour tortillas when you order quesadillas in a restauarant, but at a regular taco stand, a "quesadilla" is just a taco with cheese in it, and you get a corn tortilla. A woman who lives down the street from us makes and sells flour tortillas that are heavenly. They are so thin you can see light through them. I know she doesn't use lard because she is a vegetarian, so she must use vegetable shortening. But they are so good. Flour tortillas are never made in a press - they are rolled out. She is a really old woman - I don't know how she gets them so thin....I make them occasionally, but I just can't get them thin enough, either.