Mix Dry Ingredients: In a large mixing bowl, combine the freshly milled whole wheat flour, salt, and baking powder (if using).
Add Wet Ingredients: Add the sourdough discard or active starter, melted butter, and water to the flour mixture. Mix until a dough begins to form.
Knead Dough: Turn the dough onto a floured work surface and knead for 5-7 minutes, or knead in stand mixer, until it becomes smooth and elastic. If the dough is too sticky, add a bit more flour; if it's too dry, add a little more water.
Rest the Dough: Cover the dough with a damp cloth and let it rest for about 30 minutes. This helps the dough relax and makes rolling easier. At this point you can do a long fermentation on the dough by placing a piece of plastic wrap or a damp towel over the large bowl and putting it into the fridge overnight for 12-24 hours prior to baking. Alternatively you can proceed to cooking the flour tortillas.
Divide and Roll: After resting, divide dough into small balls (about 8-10). Roll each ball into a thin circle (about 6 inches in diameter) on a floured surface.
Cook Tortillas: Heat a cast-iron skillet or griddle over medium-high heat. Once hot, place a tortilla on the skillet and cook for no more than 1-2 minutes per side, or until light golden brown spots form. (Mine cook under a minute!) Flip and cook the other side.
Serve: Remove the tortilla from the skillet and keep warm in a clean towel. Repeat with the remaining dough.
Enjoy your freshly milled whole wheat sourdough discard tortillas! The make a great base for wraps, breakfast burritos, tacos, or as a side to your favorite dishes.