65 Percent Hydration Sourdough Bread Recipe: Foil-Sealed Crust With Cloud-Like Crumb

A 65% hydration sourdough bread delivers the perfect balance of crispy crust and airy, open crumb—no more dense loaves or gummy interiors. 🌟 This recipe transforms basic ingredients into artisanal-quality bread with a foolproof method that even beginners can master.

The secret lies in precise hydration, controlled fermentation, and a foil-sealed bake that locks in moisture while creating that coveted oven spring.

What sets this recipe apart is the 65% hydration ratio, which creates a lighter, more open crumb without sacrificing structure.

We'll use a 100% hydration starter (1:1 starter to water ratio) to ensure proper fermentation, and the bulk fermentation will unfold over 4-6 hours at room temperature, depending on your kitchen's temperature. The shaping technique—using a stretch-and-fold method—develops gluten while keeping the dough manageable.

By the time you pull that loaf from the oven, you'll have a golden-brown crust with shatteringly crisp edges and a crumb so open it looks like clouds trapped in dough.

The foil-sealed bake ensures a thick, crackly crust while keeping the interior tender and moist. This isn't just bread—it's a showstopper that will have your kitchen smelling like a Parisian boulangerie.

The best part? This recipe scales perfectly for any oven, from home kitchens to commercial setups. Whether you're baking for a family brunch or gifting loaves to neighbors, the results are consistently restaurant-quality—just with the satisfaction of making it yourself. Let's get started on creating your perfect loaf.

Ingredients for 65 hydration sourdough bread

Six essential ingredients transform your kitchen into a Parisian boulangerie—just add time and patience.

Your sourdough starter is the heart of this recipe—it should be 100% hydration (equal parts starter to water) and bubbly with activity. King Arthur or Bread Flour gives that perfect open crumb, but all-purpose works in a pinch. Water temperature matters: 98°F-100°F is ideal for consistent fermentation. If your kitchen runs hot, chill the water slightly. For salt, Diamond Crystal dissolves perfectly and enhances flavor without bitterness. I keep mine in a small jar on the counter, ready for the next batch.

No sourdough starter? Instant yeast (¼ tsp) can kickstart fermentation, though true sourdough flavor develops over time. Short on flour? Whole wheat at 10% replacement adds nutrition but may darken the crumb slightly. Olive oil isn't just for flavor—it makes shaping easier and gives that signature sheen. Cornmeal isn't mandatory, but it prevents sticking when transferring dough to the Dutch oven. The ice water at the end? Game-changer for oven spring—chills the dough just enough to hold its shape during the initial bake.

This dough keeps beautifully—cover and refrigerate for up to 24 hours before baking. For maximum flavor, let it ferment overnight at room temperature, then shape and chill before baking. The baked loaf stays fresh for 3-4 days wrapped in a clean towel, or freeze slices for up to 3 months. Pro tip: Slice with a serrated knife and toast within 24 hours for that perfect crunch. Leftovers? Perfect for croutons or French toast—just don't tell anyone I said that.

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

Here's how to craft that perfect foil-sealed crust with an airy, cloud-like crumb—every time.

In a large mixing bowl, combine the 1.5 cups active sourdough starter, 2.5 cups water at 98°F-100°F, and 3.5 cups all-purpose flour. I like to use a wooden spoon first to break up any dry flour pockets, then switch to my hands for a proper stretch-and-fold technique. Add the 0.75 tsp kosher salt and 0.25 tsp instant yeast (if using) and mix until just combined—you should see a shaggy, sticky dough forming.

This hydration level (65%) creates a tender crumb, but we need to develop the gluten properly. Perform 4 sets of stretch-and-folds at 30-minute intervals. For each set, wet your hands, grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat—this builds structure without overworking the dough. After the final fold, let it rest at room temperature for 1 hour until it becomes relaxed and slightly puffy.

After the initial rest, perform a scale check—your dough should weigh about 2.5 pounds (including bowl). Cover loosely with a damp towel and let ferment at 72°F-75°F for 4-6 hours, until it rises 50-75% and shows 70-80% bubbles when poked gently with a fingertip. I know it's ready when the dough springs back slowly (not immediately) when pressed.

During this time, the dough develops complex flavors from fermentation. If your kitchen is cooler, extend the time slightly—patience here prevents a dense crumb. The dough should look bulky, bubbly, and slightly domed when ready. This is where the magic happens—don't rush it!

Lightly dust your work surface with 0.25 cup cornmeal (this prevents sticking). Turn out the dough and gently shape it into a tight round boule. I use the "bench method"—fold the dough over itself like a letter, then roll it into a ball while applying even pressure. The goal is to create surface tension that holds the shape during baking.

Place the shaped dough seamed-side down in a lightly oiled proofing basket (or bowl lined with a floured towel). Cover and refrigerate for 12-16 hours (overnight works perfectly). Cold fermentation slows yeast activity, allowing flavors to develop fully while maintaining structure. The dough should rise 25-30% during this time—it should look puffy but still firm to the touch.

Preheat your oven to 450°F with a Dutch oven inside for 45 minutes. This ensures maximum heat retention. Remove the Dutch oven, then carefully transfer the chilled dough (still in its basket) onto a parchment-lined baking sheet. Score the top with a sharp razor (about ½-inch deep) in a simple crosshatch or diagonal pattern—this controls expansion and creates that beautiful open crumb.

Immediately cover the dough with the Dutch oven lid and bake for 20 minutes. Then remove the lid and bake for another 20-25 minutes until the crust reaches a deep golden brown and sounds hollow when tapped on the bottom. The internal temperature should read 205-210°F at the center.

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 allows the steam to escape and the crumb to fully set. The exterior should be crisp and caramelized, while the interior reveals that open, cloud-like crumb we're after.

I like to brush the cooled loaf with a little olive oil (from the 0.5 tbsp we set aside) for extra sheen. Store wrapped at room temperature for up to 3 days, or freeze for longer storage. The flavor only improves with time—this bread tastes even better the next day!

Dietary considerations for this recipe

Gluten-Free Adaptations

For a gluten-free version, replace the 3.5 cups all-purpose flour with 2.5 cups gluten-free 1:1 baking flour (like Bob's Red Mill) mixed with 1 cup white rice flour. This blend mimics the structure of wheat flour while maintaining the 65% hydration ratio.

Add 1 tbsp xanthan gum to improve elasticity, as gluten-free dough lacks natural gluten development. The dough will be stickier, so use extra cornmeal for handling. 🌾

Low-FODMAP Options

To make this bread low-FODMAP, swap the sourdough starter for ¼ tsp instant yeast (no starter) and use oat flour instead of all-purpose flour. Oat flour has a lower FODMAP content and still delivers that satisfying texture.

Reduce the water slightly to 2.25 cups to compensate for the flour's different absorption rate. This version works well for those with sensitive digestive systems.

Nut-Free Allergies

If nut allergies are a concern, simply omit the optional olive oil and replace it with avocado oil or sunflower oil for dough handling. Both oils are nut-free and provide the same benefits for shaping and scoring.

For extra richness, brush the baked loaf with melted vegetable shortening instead of oil. Always check labels to ensure no cross-contamination with nuts.

Sugar-Free Version

This recipe is naturally sugar-free, but if you're avoiding all traces of potential sugar, verify your sourdough starter contains no added sweeteners. Some commercial starters include honey or sugar—opt for a homemade starter made with just flour and water.

The 65% hydration ratio already creates a tender crumb without relying on sugar for moisture retention. The result is a perfectly balanced loaf with none of the sweetness.

High-Protein Modifications

Boost protein content by replacing 0.5 cup of the all-purpose flour with 0.5 cup vital wheat gluten. This increases protein by about 15% per serving while maintaining the same hydration level.

For a more balanced approach, use 0.5 cup white bean flour—it adds protein and fiber without altering the texture significantly. Adjust water by 1 tbsp less since these flours absorb differently. The bread will have a slightly denser crumb but still achieve that signature open structure.

Frequently asked questions