Add bread flour, salt, and baking powder to the bowl of a food processor. Pulse to combine. Add tallow, lard, or butter and pulse for a several times to combine. The flour should have a sandy consistency.
Add the warm water and turn the food processor on to knead the dough until a smooth dough forms. Let the dough rest in the bowl of the food processor for 30 minutes.
Pinch off 65-gram segments of dough and roll into individual balls. Cup your hand over the dough ball and lightly drag it across an unfloured work surface in a circular motion until a tight dough ball forms. Check the bottoms and pinch any seams together. Place on a baking sheet and cover with a damp kitchen towel. (The dough balls will be about the size of a ping pong ball.) Rest the dough for 10-minutes.
Pre-heat a large skillet or griddle over medium-high heat until the pan starts to smoke. While the pan is preheating, tear off a piece of parchment paper, cut into about a 10 by 10-inch square, and set to the side.
Working quickly, place one dough ball in the middle of the skillet and cover with the parchment paper. Using a medium sized skillet or pot, press down on top of the dough ball and flatten until an 8-inch tortilla forms. Cook for approximately 15 to 20-seconds.
Remove the parchment paper and flip the tortilla. Cook an additional 15 to 20-seconds. Repeat with the rest of the dough balls, adjusting the heat level on the pan as needed.
Stack the tortillas on a plate, and wrap with kitchen towel to keep warm.
Notes
If you don't want to flatten the tortillas with a second skillet or pan, you can use a rolling pin to flatten each dough ball before cooking.These tortillas will last about a week in the refrigerator. Reheat tortillas in a dry pan for about 15 - 20 seconds per side. Stack the tortillas and cover with a cloth to keep warm.