Mix flour, salt and baking powder in a large bowl
Work lard into the flour mixture until it resembles a coarse cornmeal. (I just use my hands)
Add 1 C water, mixing gently with a fork until it starts to clump up, and eventually sticks together. You may need to use additional water.
Turn dough out of bowl onto a flour surface and knead for several minutes until it forms a nice ball. (I had to keep sprinkling the counter with flour to keep it from sticking)
Cover with a cloth and let rest for 15-20 minutes.
Heat cast iron skillet on medium
Take a golf ball sized piece of dough
Roll in flour
Place on floured counter and roll it into a very thin circle. I reposition the dough several times by picking it up and giving it a 1/4 turn to get more of a "circle"
Cook Tortilla in dry hot skillet for 1-2 minutes per side.