Combine the flour and baking powder in a mixing bowl.  Add the lard to the flour and use a hand mixer to thoroughly combine.  Dissolve the salt in the warm water.  Add the water to the mixing bowl and use your hands to knead the dough.  Add extra flour or water to get the texture right.  You want the dough soft and moist, but not sticky.  Let the dough rest for 2 hours in a covered container.  Roll the dough into 1" balls.  On a floured surface, roll out the balls into circles as thin as possible.  Place the tortillas on a hot, greaseless griddle.  Cook them on one side for 20 seconds, flip them and cook them on the other side for 15 seconds.  Put the cooked tortillas in something to keep them warm.  We have a couple of baskets made for serving hot rolls we like to use.