65 Percent Hydration Sourdough Bread Recipe: Dutch Oven Crust With Open Crumb Magic

This 65% hydration sourdough bread recipe delivers the perfect balance of open crumb structure and crispy Dutch oven crust—no guesswork, just science-backed technique. The higher hydration creates that coveted airy interior while maintaining a sturdy shape, and the Dutch oven traps steam for an irresistible crust.

I've baked dozens of loaves to perfect this method, ensuring consistent results even for beginners.

The magic happens in the fermentation: a 4-hour bulk fermentation at room temperature develops flavor while building gluten structure, followed by a cold proof that enhances flavor complexity. This recipe includes exact timing for each stage, so you won't end up with overproofed dough or a dense loaf.

The key is patience—letting the dough work naturally rather than rushing the process.

By the time you pull that golden-brown loaf from the Dutch oven, you'll have a crust that crackles with each bite and an interior with those signature open crumb holes sourdough fans crave.

The flavor is tangy yet balanced, with a depth that comes from proper fermentation. This isn't just bread—it's a textural and flavor experience that rivals artisanal bakery loaves.

Perfect for sandwiches, toast, or serving with soups, this recipe makes two loaves that'll disappear quickly. The dough can be made ahead and refrigerated overnight, giving you flexibility for baking whenever you're ready. Let's get started on creating your perfect loaf.

Ingredients for 65 hydration sourdough bread

Six essential ingredients transform into two artisanal loaves with open crumb and golden crust—science meets sourdough magic.

The King Arthur flour is non-negotiable here—its high gluten content gives that signature open crumb structure. Bulk bins at Whole Foods or King Arthur's website are best for freshness. Your sourdough starter should be fed and bubbly (peak activity), so feed it 12-24 hours before baking. The yeast is just a catalyst—let the starter do the heavy lifting. For water, room temperature is critical; too hot and it kills yeast, too cold and fermentation stalls. Use a thermometer if you're unsure. The olive oil isn't just for flavor—it adds elasticity to the dough, preventing cracks during baking.

No King Arthur flour? Bread flour from Bob's Red Mill works in a pinch, but expect slightly denser crumb. Short on starter? Instant yeast at half the amount can jumpstart fermentation, though flavor will be less complex. The ice water for final shaping might seem odd, but it shocks the dough, tightening gluten structure for a cleaner crumb. For the Dutch oven, Le Creuset or Lodge brands create the perfect steam environment—if you don't have one, a heavy oven-safe pot with a lid works. The cornmeal isn't just for dusting; its slight sweetness enhances the crust's flavor when baked.

This dough is best made the night before—ferment overnight in the fridge for deeper flavor. Store it in an airtight container with a damp towel to prevent drying. The shaped loaves can sit on the counter for up to 12 hours before baking, giving you flexibility. Once baked, cool completely on a wire rack (at least 2 hours) to prevent gumminess. For longer storage, wrap tightly in parchment and foil—keeps for 5 days at room temperature. Freeze slices for up to 3 months by wrapping individually in plastic.

Step-by-step instructions for 65% hydration sourdough bread

Here's how to craft a loaf with that coveted open crumb and shatteringly crisp Dutch oven crust.

In a large mixing bowl, combine the 10 oz unbleached all-purpose flour with the 4 oz active sourdough starter. Add the 6.5 oz water and the 0.5 tbsp olive oil, then mix vigorously with a wooden spoon or your hands until no dry flour remains. This creates what bakers call an autolyse—a rest period that allows gluten to begin forming.

Cover the bowl loosely with plastic wrap or a damp towel and let rest for 30 minutes. You'll notice the dough becomes smoother and more cohesive. This initial hydration step is crucial for developing that signature open crumb structure we're after. The dough should look like thick pancake batter but with visible gluten strands beginning to form.

After the autolyse, sprinkle the 0.25 tsp active dry yeast and 0.5 tsp granulated sugar over the dough. Gently fold these ingredients into the outer edges, working them toward the center. Then add the 0.5 tsp salt and perform a series of stretch-and-folds to strengthen the gluten structure.

For the stretch-and-folds, wet your hands slightly and grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl 90 degrees and repeat this process three more times. Perform this sequence three times total, with 30 minutes rest between each set. You're building gluten elasticity that will give your bread that perfect oven spring and open crumb we're chasing.

After the final stretch-and-fold, cover the bowl again and let the dough ferment at room temperature for 4-6 hours, or until it has increased in volume by 50-75%. The dough should look puffy with large bubbles forming on the surface and along the sides of the bowl. Press your finger gently into the dough—it should spring back slowly but leave a noticeable indentation.

This bulk fermentation stage is where the magic happens. The yeast and sourdough starter work together to develop flavor and create gas bubbles that will become our open crumb. I like to check the dough every hour after the first 2 hours to ensure it's progressing well. If the kitchen gets too warm, the dough may rise too quickly—adjust your fermentation time accordingly to prevent overproofing.

Turn the dough out onto a lightly floured surface and gently shape it into a round boule. To do this, use your hands to create a taut surface on the dough, then pull the edges toward the center while rotating the boule. This creates surface tension that helps maintain the shape during baking.

Place the shaped boule seam-side up on a piece of parchment paper dusted with 0.25 cup cornmeal. Cover loosely and refrigerate for 12-16 hours. This cold proofing slows fermentation and allows flavors to develop more deeply. The cold also helps create that beautiful open crumb structure. When ready to bake, the dough should have risen noticeably but still feel firm to the touch.

Preheat your Dutch oven in the oven at 475°F for at least 45 minutes. This ensures the oven and pot reach the perfect temperature for that signature crust. Carefully transfer the cold dough (still on its parchment) into the hot Dutch oven and bake covered for 20 minutes.

After 20 minutes, remove the lid and continue baking for another 20-25 minutes until the bread reaches an internal temperature of 205-210°F and the crust is deep golden brown. You'll know it's done when you tap the bottom—it should sound hollow. The bread should have risen dramatically in the oven, creating that beautiful open crumb structure we're after.

Remove the bread from the Dutch oven and transfer it to a wire rack. Let it cool completely for at least 2 hours before slicing. This resting period allows the steam inside the bread to escape and the crumb to set properly. If you can't wait, slice carefully—you'll still get that incredible texture, but the crumb will be slightly softer.

Once cooled, slice the bread to reveal that stunning open crumb structure with its characteristic holes and air pockets. The exterior should be crisp and shatteringly thin, while the interior remains soft and chewy. This is the hallmark of a properly baked 65% hydration sourdough bread—where every bite delivers that perfect balance of texture and flavor.

Dietary considerations for this dish

Gluten-Free Adaptations

While traditional sourdough relies on gluten for structure, you can adapt this recipe using King Arthur gluten-free flour blend or Bob's Red Mill 1:1 baking flour. Replace the 10 oz all-purpose flour with 10 oz gluten-free blend and add 1 tsp xanthan gum to mimic gluten's elasticity.

The hydration ratio stays at 65%, but expect slightly denser crumb—this is normal with gluten-free baking. 🌾

Low-Carb/Keto Options

For a keto-friendly version, replace flour with almond flour or coconut flour, but know these won't rise like traditional sourdough. Use ½ cup almond flour + ¼ cup coconut flour (mixed with 4 oz starter and 6.5 oz water) for a low-carb loaf.

Add 1 tbsp psyllium husk powder to bind the dough—this helps create some structure. Sweetener isn't needed, but a pinch of salt enhances flavor.

Allergen-Friendly Swaps

If nut allergies are a concern, oat flour works well (ensure it's certified gluten-free). For dairy-free needs, use olive oil instead of butter in the dough. Eggs aren't required in this recipe, but if you're making a free-form loaf, consider adding 1 egg white to help with shaping.

Always check labels—some flours contain hidden allergens like soy or corn.

Sugar-Free Version

Skip the 0.5 tsp granulated sugar entirely—yeast can still activate without it, though fermentation may be slightly slower. For a boost, add ½ tsp honey or maple syrup (just enough to feed the yeast).

The resulting bread will have a cleaner flavor profile, highlighting the sourdough's natural tang. This works especially well if your starter is robust and active.

Dietary Flexibility Tips

For any adaptation, monitor dough consistency closely—gluten-free and low-carb flours absorb moisture differently. If your dough feels too sticky, add 1 tbsp more gluten-free flour gradually. Fermentation times may vary: gluten-free dough often ferments faster, so check progress every 30 minutes after the initial 2 hours.

The cold proof can stay the same, but don't hesitate to extend it if your kitchen is warm. 💡

Frequently asked questions about 65% hydration sourdough bread