Australian Sourdough Bread Recipe: Crusty Open Crumb With Tangy Depth

This Australian sourdough bread recipe delivers the perfect balance of crispy crust and airy, open crumb—just like the golden standard from Sydney bakeries. The secret lies in a robust starter culture and precise fermentation timing that captures the tangy depth Australians love in their bread.

I’ve refined this method over years of baking, ensuring every loaf achieves that coveted crunch and chewy interior without requiring a wood-fired oven.

The process begins with a 100% hydration starter, which develops complex flavors over 5–7 days of feeding. Once active, the dough undergoes a bulk fermentation of 4–6 hours at room temperature, followed by an optional overnight cold proof in the fridge for enhanced flavor.

Shaping is key—using a stretch-and-fold technique ensures an open crumb structure, while baking in a Dutch oven mimics the steam retention of a traditional brick oven.

What sets this recipe apart is its authentic Australian flair, achieved through a touch of honey in the dough and a light brush of olive oil on the crust before baking. The result?

A loaf with a shatteringly crisp exterior, a soft yet airy crumb, and a subtle tang that lingers with every bite. Whether you’re a seasoned baker or just starting, this method delivers professional-quality bread at home.

For those short on time, I’ve included a 3-day starter shortcut and tips for adjusting fermentation based on your kitchen’s humidity. The recipe also scales perfectly for larger batches, making it ideal for feeding a crowd or prepping for the week. Let’s get started on mastering this iconic Australian staple.

Ingredients for australian sourdough bread

The foundation of authentic Australian sourdough lies in these nine carefully chosen ingredients.

The 100% hydration starter is non-negotiable for that signature tang. Source your flour from King Arthur or Caputo for optimal gluten development—they're the gold standard for artisanal bread. Australian bakeries often use lemon myrtle honey, but any high-quality honey will work. The bread flour provides the structure needed for that open crumb, while all-purpose flour adds tenderness. For the yeast, Saf-Instant is my go-to—it activates immediately without proofing time. The Diamond Crystal kosher salt is crucial; it's coarser and dissolves more slowly, enhancing flavor development during fermentation.

No lemon myrtle honey? Manuka honey offers a similar depth, or use agave nectar for a neutral alternative. Swapping bread flour? Add 1 tsp vital wheat gluten per cup of all-purpose to compensate. For a 3-day starter shortcut, feed 50g flour + 50g water daily with a pinch of honey—it'll be ready by day 3. The olive oil should be fruity and peppery; Colavita or California Olive Ranch are excellent choices. If you can't find cornmeal, semolina works equally well for dusting. Always measure your water temperature with a thermometer—too hot and you'll kill the yeast, too cold and fermentation slows dramatically.

Store your starter in a glass jar with a loose lid at room temperature. It'll last indefinitely, but feed it daily with equal parts flour and water. The dough can be shaped up to 24 hours ahead and refrigerated for enhanced flavor. For larger batches, scale all ingredients proportionally—this recipe yields two standard loaves, so multiply by 2.5 for a family-sized batch. The bread keeps best at room temperature wrapped in a clean kitchen towel for 3-4 days, or freeze sliced loaves for up to 3 months in a sealed bag.

Step-by-step instructions for Australian sourdough bread

This method delivers a perfectly balanced loaf with an open, airy crumb and crisp crust.

In a large mixing bowl, combine the 0.5 cup Active 100% Hydration Sourdough Starter, 0.25 cup Granulated Honey, 0.5 tbsp Extra-Virgin Olive Oil, and 1.5 cups Lukewarm Water. The honey should dissolve completely into the water, creating a smooth liquid. This sweetener not only feeds the starter but also enhances the bread's flavor profile with subtle floral notes.

Next, add the 1.5 tsp Kosher Salt to the wet mixture and stir until fully dissolved. The salt will begin to interact with the gluten proteins, preparing them for the next stage. Let this mixture sit for 10 minutes while you prepare the dry ingredients. This resting period allows the salt to fully integrate and the mixture to reach an ideal temperature for mixing.

Add the 3.5 cups All-Purpose Flour and 1.5 cups Bread Flour to the wet ingredients. Using a wooden spoon or dough whisk, gently combine the ingredients until a shaggy mass forms. The bread flour's higher protein content will begin developing gluten strands, which are essential for the bread's structure and open crumb.

Once the dough comes together, turn it out onto a lightly floured surface and begin kneading by hand. I find that using the "push and fold" method works best for this recipe—push the dough away from you, fold it over, and rotate the bowl. Continue for 10-12 minutes until the dough becomes smooth, elastic, and slightly tacky. You'll know it's ready when it springs back slowly when poked and forms a windowpane when stretched thin. This level of gluten development is crucial for achieving the open crumb characteristic of Australian sourdough.

Place the dough back in the mixing bowl, cover it with a damp kitchen towel, and let it rest at room temperature for 4-6 hours. During this time, the dough will undergo its first fermentation, rising by about 50-75% in volume. I recommend setting a timer to check on it every 30 minutes during the first 2 hours—this is when the most dramatic activity occurs.

After 2 hours, perform your first set of folds. Wet your hands to prevent sticking, then grab one side of the dough, stretch it upward, and fold it over itself. Rotate the bowl and repeat this process on all four sides. This technique strengthens the gluten structure without overworking the dough. Perform two more sets of folds at 30-minute intervals during the remaining fermentation time. The dough should feel slightly jiggly when gently shaken, indicating it's ready for shaping.

Lightly dust a clean work surface with 0.25 cup Cornmeal and turn out the dough. Shape it into a tight boule by pulling the edges toward the center and tucking them underneath. The goal is to create surface tension that will help maintain the loaf's shape during baking. Place the shaped dough seam-side up in a lightly oiled bowl, cover it, and refrigerate for 12-16 hours.

This cold proofing period allows the dough to develop complex flavors while slowly fermenting. The cold temperature also helps create a more open crumb structure. In the morning, remove the dough from the refrigerator and let it come to room temperature for 1-2 hours before baking. You'll notice the dough has risen slightly and developed a more pronounced tang—this is your indication that it's ready for the oven.

Preheat your Dutch oven with lid in a 475°F oven for at least 45 minutes. Meanwhile, score the dough with a single deep slash using a razor blade or sharp knife. This not only releases steam but also controls the oven spring, preventing the loaf from cracking unpredictably.

Carefully transfer the dough to the hot Dutch oven, cover immediately with the lid, and bake for 20 minutes. After this initial baking time, remove the lid and continue baking 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.

Remove the loaf from the Dutch oven and let it cool on a wire rack for at least 1 hour before slicing. This resting period allows the steam to escape and the crumb to set properly. The resulting bread should have a crisp, crackly crust with an open, airy interior and a subtle tangy flavor that's characteristic of well-fermented Australian sourdough.

Regional styles of australian sourdough bread

Sydney-Style Tang

Australian bakers in Sydney prioritize a bright, tangy flavor that comes from longer fermentation times—often 12-16 hours in the fridge. The key is using a mature starter (5-7 days old) and adding just ¼ cup honey to balance the acidity without overpowering it.

I find that lemon myrtle honey, when available, adds a unique citrus note that Sydney bakeries love. 🌟

Melbourne's Crispy Crust

Melbourne's cooler climate inspired bakers to focus on ultra-crisp crusts, often achieved by baking at 475°F with steam. The trick? Brush the dough with olive oil before scoring—this creates a shatteringly crisp exterior while keeping the crumb tender.

For extra crunch, Melbourne bakers sometimes sprinkle semolina on the dough before baking, which toasts beautifully in the oven.

Country Bread Variations

In rural Australia, bakers adapted by incorporating whole grains like spelt or rye flour (replace 1 cup of all-purpose flour) for a nuttier flavor and denser crumb. Country loaves often use less water (reduce by ¼ cup) to prevent sticking during long fermentation.

These variations are perfect for dry climates where humidity affects dough handling.

Brisbane's Quick Rise

Brisbane's warm, humid climate means dough ferments faster—reduce bulk fermentation to 3-4 hours and skip cold proofing if needed. To compensate for the faster rise, Brisbane bakers often add ½ tsp extra yeast and increase the honey to ⅓ cup to slow fermentation slightly.

The result? A lighter loaf with a softer crust that’s ideal for tropical weather. 🌶️

Wood-Fired Adaptations

Many Australian bakeries use wood-fired ovens, which require adjustments for home ovens. To mimic this, preheat your Dutch oven with applewood or eucalyptus chips (soak for 30 minutes, then place on oven rack). The smoke infuses the crust with a subtle earthy aroma—a hallmark of traditional Australian sourdough.

For a home oven, simply brush the baked loaf with olive oil and sprinkle flaky sea salt for a similar effect.

Modern Shortcuts

For busy home bakers, overnight cold proofing (12-16 hours) is a game-changer—it develops flavor while you sleep. Another shortcut? Use instant yeast (¼ tsp) alongside your starter to speed up fermentation without sacrificing tang.

I also recommend pre-fermenting the starter overnight before mixing to cut active fermentation time by 1-2 hours. These tweaks keep the process manageable without compromising authenticity. ⏰

Frequently asked questions