Whisk flour, salt, and baking powder until combined. Work in lard with your hands until thoroughly mixed and crumbly. Mix in sourdough discard, then add water, ¼ cup at a time, until you have a wet, shaggy dough. Add 1 to 2 tablespoons more water, if needed.
Knead the dough mixture for 5 minutes while still in the mixing bowl. When the dough is soft and smooth and no longer sticks to the sides of the bowl, form it into a ball, cover it with plastic wrap, and allow it to rest for 30 minutes.
Divide dough into 6 equal portions and roll into balls. Use a kitchen scale to ensure equal portions, mine weighed between 95-98 grams each. Cover dough balls and allow to rest for 15 more minutes.
Form Tortillas
Begin by flattening one dough ball with your hands until it's 4"-5", then place it on a lightly floured surface. Using a floured rolling pin, start in the center and roll the dough once going up and once going down. Turn clockwise and roll in the same manner to keep a round shape. Continue rolling, flipping, and adding flour, until the tortilla is 10"-11" in circumference.
Cooking Instructions
Carefully transfer one tortilla at a time onto a heated large cast-iron skillet or tawa. Cook for approximately 45-60 seconds, flipping often, until large bubbles and pale brown spots begin to form.
Add cooked tortilla between a folded kitchen towel and continue to cook, stack, and cover until all the tortillas are cooked.
Video
Notes
You can also combine the flour, salt, baking powder, and lard using a food processor until the mixture resembles coarse crumbs or wet sand, then add water. This ensures an even distribution of fat.
Don't skip resting the dough at least 30 minutes (up to an hour). This relaxes the gluten, making the tortillas easier to roll out and prevents shrinkage.
Use a rolling pin (or a traditional Mexican palote) to roll the tortillas as thin as possible without tearing them. Authentic Mexican tortillas are thin but sturdy enough to hold fillings.
The skillet should be preheated to medium-high heat. A well-heated surface ensures tortillas cook quickly and puff up.
To encourage puffing, press lightly on the edges with a spatula during cooking. Puffing indicates well-developed gluten and proper hydration.
Place cooked tortillas in a clean kitchen towel to keep them warm and soft until serving.
Traditional tortillas often use lard for flavor and texture. If you prefer a vegetarian option, you can use vegetable shortening or neutral-flavored oil, but lard yields the most authentic taste.
When making this sourdough discard tortilla recipe, use warm water to help the fat incorporate and create a smooth, pliable dough.
Don’t skimp on the salt. It enhances the flavor of the tortillas significantly.
If making larger tortillas, these two-gallon ziploc bags come in handy. I can't recommend them strongly enough!
If you live in a drier climate, your dough may need more hydration (more liquid).
Making tortillas is an art. The more you practice, the more you’ll refine your technique for rolling, cooking, and achieving the ideal texture.