Australian Sourdough Bread Recipe: Tangy Crust With Open Crumb

This Australian sourdough bread recipe delivers that signature tangy crust and open crumb you crave—no commercial yeast needed. 🌟 The secret lies in a robust starter and high-hydration dough that ferments slowly, developing deep flavor and an airy interior.

I’ve perfected this method over years of baking, ensuring even home ovens can achieve professional results with minimal fuss.

The process begins with maintaining a lively sourdough starter, then mixing flour, water, and salt for a dough that’s sticky but manageable.

After an autolyse to hydrate the flour, we knead (or stretch-and-fold) to build structure before letting it ferment for 12–16 hours—this long rise is what gives Australian sourdough its signature tang and open crumb.

The dough is shaped, proofed, and baked at 450°F for a crispy crust and oven spring that’ll impress anyone.

What sets this apart is the balance of tradition and adaptability—no special equipment required, just patience and precision. The result? A loaf with a crisp, tangy crust and an open, airy crumb that’s perfect for toast, sandwiches, or simply enjoying with butter.

Every bite carries the depth of flavor that makes sourdough worth the effort.

Whether you’re a seasoned baker or new to sourdough, this recipe breaks down each step clearly, including troubleshooting tips for oven spring and crust color. Let’s get started on your first loaf—it’s easier than you think.

Ingredients for australian sourdough bread

These 10 ingredients create the signature Australian sourdough experience—tangy crust and airy crumb.

The sourdough starter is non-negotiable here—it must be fed and bubbly. King Arthur Flour or Caputo are my go-tos for the flours, but any high-protein bread flour works. The 75°F water is crucial; too hot and it kills the starter, too cold and fermentation stalls. I always keep a jar of starter in my fridge, feeding it every 5 days with equal parts flour and water. For salt, Diamond Crystal dissolves more easily than table salt, which affects dough development. The olive oil isn't just for flavor—it makes the sticky dough far more manageable during shaping.

No sourdough starter? Store-bought active dry yeast can work in a pinch, but the flavor won't be authentic. Swap bread flour for all-purpose plus 1 tsp vital wheat gluten if that's what you have. The cornmeal can be omitted if you're using a well-floured work surface, but it prevents sticking during shaping. For scoring, if you don't have a lame, a sharp razor blade or pizza wheel works perfectly. The coarse sea salt on top? It's worth the extra minute—it creates those signature crust crystals that make Australian sourdough so distinctive. Pro tip: toast the semolina lightly before using it for dusting your banneton—it adds a subtle nutty flavor.

This dough keeps beautifully—cover it tightly and refrigerate for up to 3 days before baking. The longer it rests, the more flavor develops. For baking, preheat your oven to 450°F with a Dutch oven inside for 45 minutes. The bread is best eaten within 2 days of baking, but it freezes well for up to 3 months. Wrap it tightly in plastic, then foil, and thaw at room temperature before toasting. I always bake two loaves at once—the second one is even better the next day.

Step-by-step instructions for Australian sourdough bread

Let's craft that iconic Aussie sourdough with its signature tangy crust and open crumb structure.

In a large mixing bowl, combine the 4 cups unbleached all-purpose flour and 1 cup bread flour. Make a well in the center and add the 0.5 cup active sourdough starter. Slowly pour in the 2.75 cups filtered water while stirring with a wooden spoon until just combined.

This initial mix, called an autolyse, allows the flour to hydrate and gluten to begin developing without the restraining effects of salt. Let the dough rest for 30-45 minutes until it becomes slightly sticky and elastic. You'll see the dough pull away from the bowl edges and form a smooth, cohesive mass.

After the autolyse, sprinkle the 1.5 tsp kosher salt evenly over the dough surface. Using your hands or a dough scraper, gently fold the salt into the outer edges, working it toward the center. Then add the 2 tbsp olive oil and continue folding until fully incorporated.

This step builds structure while preventing the dough from becoming too sticky. The olive oil adds tenderness and improves oven spring. Work the dough for about 5 minutes until it becomes more cohesive and elastic. If it's too sticky to handle, wet your hands slightly to prevent sticking.

Lightly flour a clean work surface with 0.25 cup cornmeal and turn out the dough. Perform a series of stretch and folds every 30 minutes for 2 hours total. To do this, wet your hands, grab one side of the dough, stretch it upward, and fold it over itself. Rotate the dough and repeat on all four sides.

This technique strengthens the gluten network, which is crucial for that signature Australian open crumb structure. After each set, cover the dough loosely with a damp towel and let it rest. You'll notice the dough becoming more elastic and slightly puffy as it ferments. The ideal bulk fermentation time is when the dough has doubled in size and shows good activity with bubbles forming on the surface.

After the final stretch and fold, shape the dough into a tight boule by pulling the edges toward the center and tucking them under. Place it seam-side up in a floured banneton (or a bowl lined with a floured kitchen towel) that's been lightly dusted with 0.125 cup semolina flour.

Cover the banneton with plastic wrap and refrigerate for 12-16 hours for a cold proof. This slow fermentation develops complex flavors and allows the dough to rise gradually. The cold proof also helps create that crisp, tangy crust. When ready to bake, the dough should have risen to about 1.5 times its original size.

Preheat your oven to 450°F with a Dutch oven inside for 45 minutes. Turn the dough out onto a piece of parchment paper, score the top with a razor blade using a crosshatch pattern, and sprinkle generously with 1 tbsp coarse sea salt.

Carefully transfer the dough and parchment to the hot Dutch oven. Bake covered for 20 minutes, then remove the lid and bake for another 20-25 minutes until the crust is deep golden brown and the internal temperature reaches 205-210°F. The bread should sound hollow when tapped on the bottom.

Let the bread cool on a wire rack for at least 1 hour before slicing. This resting period allows the gluten to relax and the crumb to set properly. The result should be a beautiful open crumb structure with a crisp, tangy crust that's characteristic of Australian sourdough.

Pro cooking tips for this recipe

Starter Readiness

Your sourdough starter must be at its peak before mixing—look for 100% hydration (equal parts flour and water) and a bubbly, domed surface after a 4-6 hour feed. I test mine by doing the "float test": drop a spoonful in water—if it floats, it's ready.

Feed your starter with King Arthur Flour or Caputo Tipo 00 for best results, and always use room-temperature 75°F water to avoid shocking the cultures. 💫

Autolyse Mastery

The 30-45 minute autolyse is where gluten development begins in earnest. Use a wooden spoon to mix just until combined—overmixing now creates tension that fights later fermentation. If your dough feels too wet after autolyse, add 1 tbsp bread flour at a time until it becomes more manageable.

The goal is a smooth, slightly sticky dough that pulls away cleanly from the bowl edges.

Stretch-and-Fold Technique

Perfect your stretch-and-folds by working quickly—wet your hands and dough surface to prevent sticking. Grab one edge, stretch it upward at a 45-degree angle, then fold it over the center. Rotate the dough 90 degrees and repeat on all four sides.

This builds gluten without overworking the dough. After 2 hours of folds, your dough should show 30-50% volume increase with visible bubbles on the surface.

Cold Proof Secrets

The 12-16 hour cold proof is where Australian sourdough develops its signature tang. Place your shaped dough in a floured banneton or bowl lined with a floured towel, then refrigerate.

For extra flavor, I like to add a ½ cup ice water to the dough before final shaping—this creates tiny ice crystals that burst during baking, enhancing oven spring. The cold slows fermentation just enough to develop complex flavors without overproofing.

Scoring Like a Pro

Use a sharp razor blade or lame to score your dough in a crosshatch pattern (two perpendicular cuts). Press firmly but don't cut too deeply—aim for ⅛ inch depth. This controls expansion and creates those beautiful ear-like crust sections.

Sprinkle with coarse sea salt immediately after scoring to create flavorful crust crystals. The salt should be evenly distributed but not buried under flour.

Baking with Precision

Preheat your oven to 450°F with a Dutch oven inside for 45 minutes—this creates the steam environment crucial for oven spring. Bake covered for 20 minutes, then uncover for 20-25 minutes until the internal temperature hits 205-210°F.

Tap the bottom—it should sound hollow. Let the bread cool on a wire rack for at least 1 hour before slicing, or you'll end up with a gummy crumb. The longer you wait, the better the texture becomes. 🔥

Frequently asked questions