
Turn your sourdough discard into amazingly French bread that's crisp on the outside and tender on the inside. With just a few ingredients, you can bake this crusty, airy, savory French bread that's perfect for dipping and spreading.
Combine starter, water, sugar, oil, and 3 c flour in a medium bowl or the bowl of your stand mixer. Stir using a dough whisk or flat beater until a thick, sticky dough forms. This is called a sponge. Cover and let rest for 30 mins.
Add 1 cup of flour on the countertop and knead in one cup of flour at a time until the dough is no longer sticky. Then knead for 10 minutes by hand until the dough is soft, smooth, and elastic. See video below for more tips. You should be able to stretch the dough for 4-5" without it tearing. Use a timer to time kneading and take short breaks if your arms get sore.
Use the dough hook at low speed to mix the dough until it cleans the sides and bottom of the mixing bowl. Knead in mixer for 5-7 minutes, until a soft, smooth, and elastic dough forms. You should be able to stretch the dough for 4-5" without it tearing.
Place dough into a large greased bowl turning the dough over, and cover with a clean damp towel or plastic wrap. Let rise in a warm place (75º to 85º is ideal) overnight or for 8 hours (or until dough is bubbly and has doubled in size).
Cut the dough in half. Flatten each half to a 5" x 7" rectangle (i use my fingertips to gently deflate or degas the dough). Then tightly roll on the long side. Pinch the ends to seal them.