Master artisan sourdough with The Starter Jar's beginner-friendly recipe. Learn how to bake a perfect loaf using an active starter with clear, step-by-step instructions. — Published June 7, 2026 at 6:03 AM UTC.
In a large bowl, gently combine your active Starter Jar sourdough starter with the lukewarm water until the starter is mostly dissolved.
Incorporate the bread flour and fine sea salt into the wet mixture, mixing with a wooden spoon or your hands until a shaggy dough forms and no dry flour remains.
Cover the bowl with a damp cloth or plastic wrap and let the dough rest for 30 minutes to 1 hour; this process, known as autolyse, helps hydrate the flour.
Lightly wet your hands, then grab a portion of the dough, gently stretch it upwards, and fold it back over itself towards the center of the bowl; rotate the bowl and repeat this action 3-4 times.
Perform 3-4 more sets of stretch and folds every 30-45 minutes over the next 2-3 hours; this develops gluten strength without kneading.
After the final folds, allow the dough to bulk ferment at room temperature (around 72-76°F or 22-24°C) for 4-8 hours, or until it has visibly increased in volume by about 30-50% and feels airy.
Gently turn the dough out onto a lightly floured surface, shape it into a tight ball (boule) or an oblong (batard) using light tension, and then dust it with flour.
Carefully transfer the shaped dough into a floured proofing basket (banneton) or a bowl lined with a floured kitchen towel, cover it, and refrigerate for 12-18 hours; this cold proof deepens flavor and makes the dough easier to handle.
When ready to bake, preheat your oven to 450°F (232°C) with a Dutch oven inside for at least 30 minutes.
Carefully remove the hot Dutch oven, invert the cold dough into it, score the top with a sharp blade or lame, and bake covered for 30 minutes.
Remove the lid from the Dutch oven and continue baking for another 15-20 minutes, or until the crust is deeply golden brown and the internal temperature reaches 200-210°F (93-99°C).
Transfer the baked loaf to a wire rack and allow it to cool completely for at least 1-2 hours before slicing; this crucial step ensures a proper crumb structure and prevents gumminess.