I had some whole wheat firm starter to use up and decided to try making some leavened tortillas. Since tortillas usually aren't leavened, these would probably be more correctly named flatbreads, but I will use them as tortillas : ) This made four smallish ones.
Mix water and starter in a bowl first:
12 grams firm (60%) sourdough starter
84 g water
In food a food processor, mix:
114 g whole wheat flour (I used freshly ground white whole wheat)
1/4 tsp. salt
1 T. potato flour