In a large bowl, mix together the flour and the salt.
Use a fork to combine the peasized cubes of butter into the flour mixture, creating a coarse meal mixture.
Add the water a little at a time and knead the dough slowly against the sides of the bowl a few times until it forms a smooth ball and all the flour is incorporated.
Divide the dough into 20 equal pieces, rolling each into a ball, making each ball as close in size as the others. Cover the dough balls with a damp towel for at least 30 minutes (or up to 2 hours).
Preheat a cast-iron skillet over medium-high heat on the stovetop as you roll out the balls of dough.
To roll out the balls of dough, add flour to your work surface and use your hands to flatten the balls into round discs. Each will be about 6 inches, depending on the thickness of each tortilla, but keep them on the thinner side.
Once the skillet is hot, lay a tortilla on it and cook for 30 seconds on each side. It WILL bubble up, so don't be alarmed when that happens!
Stack the tortillas on a plate and cover them with a clean towel. Serve warm.