Step 1

Whisk flour and salt together in a medium bowl. Using the back of a fork, cut the butter into the flour, mixing and smushing it until it is well incorporated into the flour. You can use your hands if necessary to further incorporate the butter into the flour.

Step 2

Stir in the water and sourdough starter and mix with a spatula until a shaggy dough forms. Use your hands to gently knead the dough in the bowl, if necessary, to get the mixture to form a rough ball.

Step 3

Turn the dough out onto a floured surface and knead for another 1 to 2 minutes or until it is smooth and not sticking to the work surface.

Step 4

Cut the dough into 12 pieces for taco- or enchilada-sized tortillas or 6 pieces for burrito-sized tortillas. Shape each piece into a ball. (Video guidance here.)

Step 5

Cover with a very light kitchen towel or plastic wrap. Be careful that your room isn’t too hot. Let the dough rest 30 minutes and up to two hours (at room temperature or 24 hours in the fridge. If you need to store the in the fridge, transfer balls to an airtight container.)

Step 6

Roll out each ball to about 6 to 8 inches (taco size) or 10 to 12 inches (burrito size) in diameter, or till you can see the counter start to come through — in other words, roll them as thinly as possible.

Step 7

Heat a 12 inch non-stick or cast-iron pan (do not add any oil) on medium-high. Lay the tortilla in the pan and cook until it puffs and little brown spots on the underside appear. Turn with tongs or your fingers and cook again till lightly brown. Each tortilla takes about 60 seconds total to cook. If you like a bit of char, keep the tortilla in the skillet until it is charred on both sides. Note: Your first 3 to 4 tortillas may be on the pale side. This is just likely because your skillet isn’t up to temperature. Once you make a few, you’ll find your rhythm and adjust the heat as necessary depending on if you want more or less char.

Step 8

Once the tortillas cool, store them in an airtight bag or container at room temperature for up to 5 days or freeze for up to 3 months.