1. Combine sourdough discard, flour, salt, and water (and oil if using) in a mixing bowl

2. Mix until a soft, slightly tacky dough forms, adding flour or water as needed

3. Knead gently for 1-2 minutes until smooth

4. Cover and rest dough for 20-30 minutes

5. Divide dough into 8-10 pieces and form into balls

6. Roll each ball into a 6-8 inch circle on a lightly floured surface

7. Preheat a skillet or cast-iron pan over medium-high heat

8. Cook each tortilla 20-30 seconds per side until golden spots appear, flipping once

9. Stack cooked tortillas and cover to trap steam and keep soft

10. Cool completely before storing in an airtight container