Sourdough bread has never been more popular, and for good reason. The flavour of a well-made sourdough — the complex tang, the caramelised crust, the creamy, open crumb — is incomparably better than anything produced by commercial yeast alone. The process of making it, once understood, is deeply satisfying in a way that few other kitchen activities match: a living culture that you feed and maintain, a dough that changes under your hands, a loaf that emerges from the oven as a genuine achievement.
The reputation sourdough has for difficulty is partly deserved and partly myth. The actual hands-on time is modest — perhaps 30 minutes across an entire day. The challenge lies in understanding what you are looking at and what the dough is telling you, which takes practice but is far more accessible than most beginners expect. This guide will take you from first starter to finished loaf.
Understanding the Starter
Sourdough is leavened by a starter — a fermented mixture of flour and water that contains wild yeast and lactic acid bacteria. The yeast provides leavening (the bubbles that make bread rise), while the bacteria produce the acids responsible for sourdough's characteristic flavour. Your starter is a living ecosystem, and maintaining it is the foundation of everything else.
To create a starter from scratch, combine 50g of strong wholemeal or rye flour with 50g of room-temperature water in a clean jar. Cover loosely and leave at room temperature. After 24 hours, discard half the mixture, add another 50g flour and 50g water, and mix thoroughly. Repeat this process daily. Within 5 to 10 days, depending on your kitchen temperature and the flour you use, the starter will become reliably active — doubling in size within 4 to 8 hours of feeding and producing a pleasant sour smell. This starter can be maintained indefinitely with regular feeding and refrigeration between bakes.
The Basic Sourdough Process
A standard sourdough loaf follows a predictable sequence: levain build, autolyse, mix, bulk fermentation with stretch-and-folds, shaping, cold proof, and baking. This sounds complex but each step is simple in isolation. The levain is a small quantity of active starter mixed with flour and water 4 to 8 hours before you plan to mix your dough. Autolyse is simply mixing flour and water and resting before adding the levain and salt, which improves gluten development. Bulk fermentation is the long first rise at room temperature, during which you perform periodic stretch-and-folds to develop the gluten network.
The Beginner Recipe: 75% Hydration White Sourdough
For your first loaf, use a relatively simple recipe: 450g strong white bread flour, 50g wholemeal flour, 375g water (75% hydration), 100g active levain, and 10g fine sea salt. Combine the flours and 350g of the water and rest for 30 to 60 minutes (autolyse). Add the levain and salt with the remaining 25g water and mix until incorporated. Over the next 4 to 5 hours at room temperature (around 22 to 25 degrees Celsius), perform a set of stretch-and-folds every 30 minutes for the first 2 hours. The dough should become noticeably more structured and slightly domed by the end of bulk fermentation.
Shaping and Cold Proofing
Shaping is the step that most beginners find most challenging. The goal is to create surface tension in the dough without degassing it entirely. A simple round boule (ball) shape is the most forgiving for beginners. After shaping, place the dough seam-side-up in a well-floured banneton (proofing basket) or a bowl lined with a floured tea towel. Cover and refrigerate for 8 to 16 hours. The cold proof slows fermentation dramatically, developing flavour and making the dough easier to score and handle.
Baking: The Dutch Oven Method
Baking in a covered Dutch oven or cast iron casserole is the most reliable method for home bakers. Preheat the oven to 240 to 250 degrees Celsius (as high as your oven will go) with the Dutch oven inside for at least 45 minutes. Turn the cold dough out onto a piece of baking parchment, score the surface with a sharp blade (a lame or a razor blade) in a pattern that allows the loaf to expand. Lower it into the hot Dutch oven, cover, and bake for 20 minutes. Remove the lid and bake for a further 20 to 25 minutes until the crust is deeply coloured and the internal temperature reaches approximately 96 degrees Celsius.
Reading and Troubleshooting Your Bake
Sourdough teaches you to read signs and adjust. A flat loaf that barely rose suggests either underfermentation (the starter or levain was not active enough, or bulk was too short) or overfermentation (the dough became slack and structureless). Dense crumb suggests insufficient gluten development or overfermentation. A gummy interior suggests underbaking. Pale crust suggests oven temperature was too low or the lid was left on too long. Each bake teaches you something and the improvement from loaf three to loaf ten is typically dramatic and deeply satisfying.
Variations to Try Once Comfortable
Once your plain white sourdough is reliable, a world of variations opens up. Inclusions like olives, walnuts, sun-dried tomatoes, rosemary, roasted garlic or seeds can be folded in during the final stretch-and-fold. Higher whole grain percentages — 20, 30 or 50 percent wholemeal or rye — add flavour complexity and nutrition, though they require adjusted hydration and fermentation timing. Enriched sourdoughs with butter and eggs produce the most extraordinary brioche-style loaves. Seeded sourdoughs with sunflower, pumpkin and sesame seeds pressed into the crust produce loaves that are hard to stop eating.
"The magic of sourdough is not in the complexity of the process but in the alchemy of it: a handful of flour and water, a living culture, and time, producing something extraordinary."
The first loaf will probably not be perfect. The tenth will be significantly better. The fiftieth will produce something that makes people ask where you bought it. Sourdough baking is a skill that compounds with practice, and the investment pays dividends in taste, knowledge and the particular pleasure of making something genuinely excellent from the most fundamental of ingredients.