Knead flour, water, salt and olive oil until it comes together.
Divide the dough into eight. Roll them into balls.
Flatten the balls out into 4″ / 10cm discs.
Place each side onto a medium to high heat cast iron skillet until golden brown spots start to appear, for about a minute. They may puff up and that’s a good thing.
To make sure the tortilla doesn't stick and burn, flip it every 20 seconds. If it burns with 20 seconds flipping time then the skillet is really too hot, if no golden brown spots start to appear after 80 seconds of flipping then the skillet is probably not hot enough. Keep the tortillas under a kitchen towel so they soften up and keep warm.
Enjoy!