How to Make It
Whisk together flour, salt, and baking powder in a large bowl. Using a pastry blender, cut in lard until mixture resembles small peas. Using a fork, stir in warm water until a dough forms. Cover and let dough stand 10 minutes. (Dough will be very soft and slightly sticky.)
Heat a large cast-iron skillet or comal over medium. Shape a 1 1/2-ounce ball of dough (about 1 inch wide). Dust ball in flour, and roll into a 6 1/2-inch circle (about 1/8-inch thick) on a lightly floured surface. Cook tortilla until puffed and golden brown spots appear, about 1 minute per side. As each tortilla cooks, shape and roll the next one. Wrap cooked tortillas in a towel to keep warm.