Australian Sourdough Bread Recipe: Crusty Crunch With Open Crumb Magic in One Bake

This Australian sourdough bread recipe delivers the perfect marriage of crispy crust and open, airy crumb—just like the iconic loaves from Melbourne’s best bakeries. The secret lies in a high-hydration dough and long fermentation, which creates that signature texture and deep flavor.

I’ve refined this method over years of baking, ensuring every loaf turns out with a satisfying crack and tender interior.

What sets Australian sourdough apart is its balance of structure and openness, achieved through precise fermentation and baking techniques. Unlike denser breads, this recipe focuses on developing gluten slowly, allowing for an open crumb while maintaining a sturdy crust.

The dough is forgiving but requires patience—worth it for that restaurant-quality result at home.

By the time you pull this loaf from the oven, you’ll have a golden-brown crust with deep cracks and a crumb so open it practically melts in your mouth. The flavor is tangy yet mellow, with a subtle depth from the long fermentation.

Perfect for toast, sandwiches, or simply enjoying warm with butter, this bread is a game-changer for home bakers.

For those new to sourdough, I’ve included step-by-step guidance on starter care and dough handling, plus troubleshooting tips to avoid common pitfalls. Whether you’re baking for a crowd or treating yourself, this recipe delivers professional results with minimal fuss. Let’s get started!

Ingredients for australian sourdough bread

Here’s the secret to that iconic Australian sourdough—high-hydration dough and patient fermentation for restaurant-quality loaves at home.

The sourdough starter is your foundation—it must be 100% hydration and actively bubbling. King Arthur or Bobs Red Mill flours work best for structure, but any high-protein flour will do. For the starter, I feed mine with whole-grain flour first thing in the morning for extra tang. The bread flour gives that open crumb, while the all-purpose adds tenderness. If you’re in Australia, grab Breadworks flour for that authentic texture. Skip the pre-mixed sourdough starters—they lack the depth of a homegrown culture.

No bread flour? Add 1 tbsp vital wheat gluten per cup of all-purpose flour for similar results. Short on olive oil? Coconut oil works too, though it has a different finish. The cornmeal and semolina can be swapped for rice flour if needed, but they’re key for that crisp crust. For scoring, use a lame or razor blade—anything sharp enough to cut cleanly. The ice water is non-negotiable; it tightens the gluten for that perfect oven spring. Pro tip: Chill your dough overnight if you’re baking the next day—it develops even more flavor.

This dough is a two-day project, but it’s worth every minute. Keep your starter at room temperature, feeding it every 12 hours for 24 hours before using. The final dough can be shaped, proofed, and baked immediately or refrigerated for up to 48 hours—pull it out 2 hours before baking for best results. Store your loaves in a bread box or paper bag to maintain moisture. Freeze extras by slicing and wrapping in parchment—3 months in the freezer, no problem. That first bite? Pure magic.

Step-by-step instructions for Australian sourdough bread

Here's how to craft that iconic Australian sourdough—crispy crust, open crumb, and all in one bake.

In a large mixing bowl, combine the 0.5 cup active sourdough starter, 4 cups all-purpose flour, 2 cups unbleached bread flour, 0.5 tsp granulated sugar, and 1.5 tsp diamond crystal kosher salt. The sugar here isn't for sweetness—it's to feed the starter and encourage fermentation. Mix these dry ingredients until the flour is evenly distributed and no salt crystals remain.

Next, add the 2 tbsp extra-virgin olive oil and 3 cups cold water. Using a wooden spoon or dough whisk, mix vigorously for 5 minutes until the dough comes together into a shaggy mass. The cold water helps strengthen gluten formation, which is critical for that signature open crumb structure. If the dough feels too sticky, add 1 tbsp of the all-purpose flour—but don't overdo it, as too much flour can weaken the gluten network.

Turn the dough onto a lightly floured surface and knead for 8-10 minutes by hand, or use a stand mixer with a dough hook on medium speed for 5-6 minutes. The dough should become smooth, elastic, and slightly tacky but not sticky. If it's too dry, add 1 tsp cold water at a time until it reaches the right consistency—think of it like a well-hydrated sponge that still holds its shape.

Once kneaded, let the dough rest in the bowl for 30 minutes (this is called autolyse). This step allows the flour to fully hydrate and the gluten to relax, making the final shaping much easier. Cover the bowl loosely with a damp towel to prevent drying. During this time, the dough will look deceptively slack—this is normal and actually enhances the bread's open crumb structure.

After the autolyse, perform a series of stretch-and-folds every 30 minutes for 2 hours. To do this, wet your hands, grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat this motion all around the dough. This technique strengthens the gluten and encourages even fermentation. You'll notice the dough becoming smoother and more elastic with each set.

After the final stretch-and-fold, let the dough rest uncovered at room temperature for 1-2 hours, or until it has nearly doubled in size and looks puffy with bubbles forming on the surface. The exact time depends on your kitchen temperature—warmer environments speed up fermentation. Press your finger gently into the dough; if it springs back slowly, it's ready. If it springs back quickly, give it more time. This step is where the magic happens—the longer the fermentation, the more complex flavors develop.

Lightly dust your work surface with 0.25 cup cornmeal and turn out the dough. Gently shape it into a round boule by pulling the edges toward the center and tucking them underneath. The goal is to create surface tension, which helps the bread hold its shape during baking. Place the shaped dough seam-side up in a well-floured proofing basket or a bowl lined with a floured kitchen towel.

Cover the dough loosely and let it proof at room temperature for 1-2 hours, or until it has risen about 50% and looks slightly domed. If your kitchen is cold, you may need to extend this time. The dough should feel firm to the touch but still yield slightly when pressed. Once proofed, turn the dough onto a piece of parchment paper, dust the top lightly with 0.25 cup semolina flour, and cover again for 10 minutes to relax the surface before scoring.

Preheat your oven to 450°F with a Dutch oven inside for 45 minutes. This step is crucial—it creates the steam needed for that crispy crust and open crumb. Carefully transfer the dough (still on the parchment) into the hot Dutch oven, semolina-side up. Cover with the lid and bake for 20 minutes. Remove the lid and bake for another 20-25 minutes, until the crust is deep golden brown and sounds hollow when tapped on the bottom.

If the crust isn't browning enough, broil for 1-2 minutes at the end. Let the bread cool on a wire rack for at least 1 hour before slicing—this allows the crumb to set and prevents a gummy texture. The internal temperature should reach 190-200°F when done. Once cooled, slice to reveal that beautiful open crumb structure, a hallmark of authentic Australian sourdough.

Common mistakes when making great australian sourdough bread

Over-Fermented Dough

One of the most common mistakes is letting your dough ferment too long, which can lead to a collapsed loaf or overly sour flavor. Australian sourdough thrives on long fermentation, but pushing it past the 1-2 hour bulk fermentation window risks overproofing.

Watch for dough that rises too quickly or develops a strong, yeasty aroma—this means it's ready to shape sooner than you think. If your dough smells like a brewery instead of fresh bread, it's time to bake. 🌡️

Under-Mixed Gluten

Skipping proper gluten development results in a dense, gummy loaf instead of that signature open crumb. The stretch-and-folds during bulk fermentation are non-negotiable—they strengthen gluten strands for structure. If your dough feels slack after kneading, don't rush the autolyse. Give it the full 30 minutes to hydrate properly.

I’ve seen home bakers skip this step and end up with bread that’s more like a dense cake. Use a windowpane test: stretch a small piece of dough—if it’s thin enough to see light through, the gluten is developed.

Skipping the Dutch Oven

Baking without a Dutch oven is like trying to make a soufflé without an oven—it’s possible, but the results won’t be the same. The Dutch oven traps steam, which is essential for that crisp crust and open crumb.

If you don’t have one, use a heavy oven-safe pot with a lid or even a steam-injected baking stone. Preheating the Dutch oven for 45 minutes ensures maximum steam buildup. Without this, your bread will bake too quickly on the outside and stay raw inside.

Scoring Too Late

Scoring your dough too late can cause the bread to burst open in the oven, ruining your beautiful design. Score just before baking, when the dough is fully proofed and slightly relaxed.

Use a sharp lame or razor blade to cut ½ inch deep in a crosshatch or basketweave pattern. The dough should spring back slightly but not resist the blade. If you score too early, the cuts will close up during proofing.

If you score too late, the steam pressure will cause messy bursts. Timing is everything here!

Ignoring Dough Temperature

Dough that’s too warm ferments too quickly, while cold dough slows fermentation to a crawl. Ideal dough temperature for Australian sourdough is between 75-78°F—use a digital thermometer to check. If your kitchen is warm, chill the dough for 30 minutes before shaping.

If it’s cold, let it sit at room temperature for 10-15 minutes before bulk fermentation. I’ve had doughs that rose in under an hour because they were too warm, leading to a flat, dense loaf. Consistency is key—aim for that sweet spot.

Over-Baking for Crust Color

It’s tempting to bake until the crust is deep brown, but over-baking dries out the crumb and turns it tough. Australian sourdough should have a golden-brown crust with deep cracks, not a burnt exterior. Pull it out when the internal temperature hits 190-200°F—this ensures a moist crumb.

If your oven runs hot, reduce the temperature by 25°F and bake longer. A toothpick inserted into the center should come out clean but slightly sticky. Let it cool completely before slicing to avoid a gummy texture. 💡

Frequently asked questions