The Patient
Loaf
Bread is a conversation
You followed the recipe exactly. You measured everything to the gram. You kneaded, folded, and waited. And five hours later the dough sat there flat — no puff, no bounce, just a heavy, lifeless lump. Almost every baker has lived this moment, and almost every baker has drawn the wrong conclusion from it: maybe sourdough just isn’t for me.
Here is the truth this book is built around. Your dough is not reading the recipe. It is reacting to your kitchen — its flour, its temperature, the life in your starter, the hours on the clock that day. A recipe is a snapshot of one baker’s kitchen on one afternoon. Learning to bake is learning to translate that snapshot into your kitchen by reading what the dough is telling you.
So this is not a book of rules to obey. It is a field guide to a living process. We’ll move in the order the craft actually unfolds: first the whole arc of a loaf so the vocabulary stops being confusing, then the starter that powers everything, then the two great levers — flour and water — that decide how your dough behaves. From there into gluten and fermentation, the two skills that separate a flat brick from an airy loaf, and finally shaping, scoring, and the bake itself. The last chapters are recipes to grow into.
Read it cover to cover the first time. After that, keep it open on the counter, flour-dusted and stained. That’s where it belongs.
What’s inside
The shape of a loaf
Most confusion in sourdough is really confusion about vocabulary. Bakers use the same words to mean slightly different things, and a beginner ends up unsure when one stage ends and the next begins. So let’s walk the entire process from culture to crust, in plain order. Everything else in this book hangs on this skeleton.
The night before
You perform a starter build — feeding your culture so it’s lively, risen, and ready to leaven dough the next day. This assumes you already keep a healthy starter, which is the subject of the next chapter.
The day of baking
- Final mix. Flour, water, starter, and salt come together. The moment yeast meets the dough, the clock on bulk fermentation starts.
- Bulk fermentation. The dough rises as one mass. This is where flavour, structure, and gas develop. It might last a couple of hours or run overnight, depending on how much starter you use and how warm the room is.
- Folds. Stretch-and-folds or coil folds happen during bulk — they build strength without kneading.
- Divide. Cutting the mass into loaves. This is the moment bulk fermentation ends — the dough is no longer in a bulk.
- Preshape. A light, rounding shape that organises the dough and gives it a skin.
- Bench rest. Twenty to thirty minutes for the gluten to relax so the final shape goes smoothly.
- Final shape. Building surface tension into a taut ball or batard.
- Final proof. The shaped loaf rises in a banneton or couche. This rise is called the proof — never the bulk.
- Score. A slash in the surface that tells the loaf where to expand.
- Bake. Steam first, then dry heat to set the crust.
- Cool, then eat & store. The crumb is still setting as it leaves the oven. Patience, one last time.
Bulk fermentation happens before shaping, with the dough as one mass. The final proof happens after shaping, with the dough in its basket. Folds belong to bulk. Once you divide, bulk is over by definition. Get this and half the forum arguments you’ll ever read simply dissolve.
Where retarding fits
Putting the dough in the fridge — retarding — is optional. It is not a required step; it’s a tool for scheduling and for developing flavour. You can retard during the bulk, during the final proof, or both. Because it can land in either stage, it’s the single biggest source of beginner confusion, which is exactly why it helps to have the clean skeleton above to hang it on.
The only two controls you have
How do you steer all of this? With just time and temperature. The speed of fermentation is directly tied to the proportion of starter in your dough and the temperature it’s sitting in. More starter or a warmer room means faster; less starter or a cooler room means slower. That’s the whole control panel. Once you internalise that every adjustment is really a time-or-temperature adjustment, the process stops feeling like magic and starts feeling like cooking.
The starter
A sourdough starter is a stable colony of wild yeast and lactic-acid bacteria living in a paste of flour and water. The yeast makes carbon dioxide to inflate your dough; the bacteria make the acids that build flavour and, over time, soften the crumb. Keep that little ecosystem happy and everything downstream gets easier.
What a healthy starter looks like
You’re looking for reliability, not drama. A strong starter:
- Doubles dependably between feedings — roughly four to eight hours at room temperature
- Shows plenty of bubbles across the surface and down the sides of the jar
- Passes the float test (a spoonful floats in water when it’s at peak)
- Smells mildly tangy and yeasty — not sharply sour, and not like nail polish or alcohol
If you’re not seeing these signs, don’t bake yet. Feed it, warm it, and wait. Trying to leaven a loaf with a weak starter is the most common reason a dough never rises.
Feeding: ratios and rise times
A feeding ratio describes the proportion of old starter to fresh flour to water — written starter : flour : water. The classic is 1 : 1 : 1, but the ratio you choose is really a way of scheduling when your starter will peak. A smaller proportion of old starter means the culture takes longer to consume its fresh food and rise; a larger one peaks fast. The chart below is the one to keep on your fridge.
Building a stronger culture
Many bakers feed 1:1:1 out of habit and quietly wonder why their loaves lack height. Feeding a larger proportion of fresh flour — 1:5:5 or even 1:10:10 — gives the yeast more food and tends to build a more vigorous, resilient starter, which shows up later as better oven spring.
One baker’s experience captures it well: after switching to roughly a 1:3:2 feed — eyeballed to a very thick paste rather than measured, about 40g starter, 120g flour, 80g water — the culture became dramatically stronger. The loaves grew taller, and the feed sustained the starter so long it only needed feeding once every four or five days while living in the fridge, even baking three times a week. Consistency by feel, not by fuss.
Starters are tougher than you think
It’s easy to treat a starter like a delicate pet. In reality the culture is robust. One well-known method (Ben Starr’s) deliberately uses a starter left unfed in the fridge for months, paired with ordinary all-purpose flour, a low 60% hydration, a high salt percentage near 3.5%, and no kneading at all — and still makes bread. Starters can be raised from almost any flour, including bleached all-purpose, plus filtered water. You will not kill yours by missing a feeding. Warmth (70–78°F) and regular feeding are all it really asks.
Hydration
Ever wonder why some bread has neat little bubbles and others look like a cheese grater? That’s hydration at work. Hydration is simply the weight of water relative to the weight of flour, written as a percentage. It changes everything from how sticky the dough feels in your hands to how airy it bakes.
The formula
(Water weight ÷ Flour weight) × 100 = hydration %. Always weigh, never measure by volume — a cup of flour varies wildly with how it’s packed. For example: 500g flour with 250g water is 50%; with 340g it’s 68%; with 400g it’s 80%.
Match hydration to your skill and your goal
Higher hydration rewards you with a more open, airy crumb — but it demands gentler handling and stronger gluten. The right answer isn’t “as high as possible”; it’s the level that matches what you’re trying to bake and how confident your hands are.
| Hydration | Feel & handling | Best for |
|---|---|---|
| 50–60% · Low | Firm, easy to handle, holds shape | Sandwich bread, bagels, pizza |
| 60–70% | Soft but obedient; beginner-friendly | Learning the fundamentals |
| 65–75% · Medium | Extensible, softer crumb | Classic artisan loaves, rolls |
| 80% · High | Sticky and trickier; wet hands help | Open crumb; bigger holes |
| 90%+ · Very high | Silky, stretchy, very sticky | Ciabatta, focaccia — let time work |
You can see the payoff in the crumb itself. As hydration rises, the holes grow larger and more irregular and the crumb turns glossy and translucent — the hallmark of a well-handled wet dough.
Start low, master control, then level up one percentage point at a time. A confident 70% loaf beats a collapsed 85% one every time. And note that hydration isn’t a sourdough-only idea — it governs all yeast-leavened bread. Sourdough bakers just talk about it more, because it interacts so strongly with fermentation and crumb.
Flour
Different flours absorb water differently. The main driver is protein content — the raw material of gluten. More protein means more gluten development and more water absorbed; less protein means a softer, slacker dough at the same hydration. This is why the same percentage produces a workable dough for one baker and a sticky mess for another.
Matching protein to water
As a starting guide, here is roughly how much water a kilogram of flour will take, by protein level. Treat it as a launch point, then read the dough.
For a first loaf: reach for a flour around 11–13% protein (it’s printed on the bag) and start at about 600g water per kilogram of flour. Too sticky next time? Drop to 550. Too stiff? Bump to 650. You’re calibrating to your specific flour.
How specific flours behave
- Bread flour (12–13.5%): develops strong gluten, drinks more water. The reliable default.
- All-purpose / plain (~10–11.7%): less absorbent, softer dough. Sub it into a bread-flour recipe without dropping the water and the dough will feel slack and sticky.
- Whole wheat: the bran and germ act like tiny sponges (soaking up water) and like tiny knives (cutting gluten strands). It absorbs more yet develops gluten harder, so dough feels drier and denser — a 70% whole-wheat can handle like a 60% white.
- Rye: its own beast. It drinks water voraciously but barely builds gluten, relying instead on pentosans and arabinoxylans that swell without elasticity. Expect stickiness, not stretch — wet clay, not rubber bands. Hence dense tin loaves like pumpernickel.
- Spelt, einkorn & ancient grains: trendy and tricky. Spelt absorbs well but its gluten breaks down fast; einkorn forms weak, sticky gluten; kamut, emmer, teff and sorghum vary wildly. All ferment faster and want gentler, shorter handling.
- Gluten-free flours: no gluten, no structure. They depend on binders — psyllium husk, xanthan gum, chia — and behave like thick batter, often at 80–100%+ hydration.
- Stone-ground vs. commercial: stone-ground keeps more bran, germ and oils — richer flavour, and thirstier by 2–5%, but it ferments faster and can spoil if poorly stored. Commercial flour is refined, predictable, and less absorbent.
The three-step adjustment
1. Start with slightly less water — reduce by about 5%.
2. Mix and rest 15–20 minutes (an autolyse) so the flour can drink.
3. Add more water only if the dough still feels too dry.
Building strength
Even with a perfect starter and flawless fermentation, weak gluten can’t hold the gas the yeast produces — and the dough stays flat. Strength is what lets a loaf rise tall instead of spreading sideways. Yet undermixing is endemic among home bakers, and there’s a fascinating reason why.
A little missing history
Many popular recipes inherited a light touch from the early no-knead movement and from Chad Robertson’s original Tartine Bread, which gave almost no guidance on mixing after the initial rest — all signals suggested you shouldn’t work the dough much. That wildly influential recipe was copied countless times, each version quietly omitting any real gluten-development step. It wasn’t until Robertson’s 2021 Bread Book that the correction appeared: nearly nine minutes of hand mixing with three-minute rests, effectively a new fifteen-minute development stage. That update was never as widely shared as the original — so a generation of bakers learned to undermix.
An effective mixing pattern
Most strong methods share a rhythm worth learning:
- A premix with a ~30-minute rest. Either an autolyse (flour and water only) or a fermentolyse (flour, water, and starter together). Both hydrate the flour and quietly begin forming gluten before you do any work.
- Intermediate mixing with short rests — this is where the real development happens, sometimes with reserved water, starter, or salt added late (bassinage and delayed addition).
- Another ~30-minute rest before your first stretch-and-fold begins the bulk folds.
An autolyse is mixing flour and water and letting it sit before the starter goes in. A fermentolyse includes the starter from the very start. Both jump-start extensibility and make the dough easier to develop — the difference is simply whether fermentation begins during that first rest.
Hand-mixing methods
- Slap and fold — energetic lifting and slapping; superb for developing strength in wetter doughs.
- Pinch and fold — gentler; good for incorporating and for delicate doughs.
- Rubaud — a rhythmic scoop-and-stretch with one hand; excellent for high-hydration dough that’s too wet to slap.
The windowpane test
An underused but invaluable gauge of strength: pull a small piece of dough thin enough to see light through it. If it stretches translucent without tearing, the gluten is well developed. If it rips quickly, keep developing. Use it throughout bulk, not just once — it tells you where you actually are rather than where the clock says you should be.
Fermentation
Fermentation is the heart of sourdough: wild yeast and bacteria feed on the sugars in the flour, producing the gas that inflates the dough and the acids that build flavour. The whole craft turns on judging when this process has gone far enough — not too little, not too far. And the clock is the least reliable guide you have.
What a well-fermented dough shows you
- Risen by roughly 30–50% during bulk (some methods push further — see the technique on the next page)
- Feels puffy, soft, and pillowy — not stiff
- Bubbles visible under the surface
- Jiggles slightly when you shake the container
- A light finger-poke springs back slowly
- Smells mildly tangy — not sharply sour or boozy
Five common causes of a weak rise
- Starter not active enough. If it doesn’t double reliably in 4–8 hours, it can’t raise bread. Feed it, keep it at 70–78°F, and confirm with a float test before mixing.
- Too cold. Below 68°F fermentation crawls. Use a proofing box, an oven with just the light on, a microwave with a mug of hot water, or a warm spot near an appliance.
- Under- or over-proofing. Shape too early and there’s not enough gas; wait too long and the structure collapses and won’t recover. Read the dough, don’t just watch the clock.
- Poor gluten structure. Even with good fermentation, a weak net can’t trap gas. Develop more, and check with the windowpane test.
- Too much hydration, or miscounted starter. Too-wet dough spreads instead of rising. Remember the starter carries its own flour and water — factor both into your baker’s math, and keep total hydration around 70–75% until you have the feel.
The best way to internalise “not enough,” “just right,” and “too far” is to see them side by side in the crumb — the permanent record of how your fermentation and proof went.
Cold bulk vs. cold proof
The fridge is your scheduling friend, and there are two distinct ways to use it. Both slow fermentation to build flavour, but they fit different lives.
Cold bulk fermentation — chill before shaping
Mix, do your folds in the first few hours, then refrigerate the whole mass before shaping. The dough develops flavour and gas slowly in the cold. Next day, take it out, let it warm slightly if stiff, then divide, shape, and proof. This phase is forgiving — it can sit a day or even two, and cold dough handles and shapes cleanly. Best when your evenings are busy and you’d rather shape whenever you get a free moment.
Cold proofing — chill after shaping
Bulk-ferment warm until light and airy, then divide, shape, and put the shaped loaf straight into the fridge in its banneton. Bake it cold, right from the fridge. It’s more time-sensitive — leave it too long and you risk overproofing — but it rewards you with lovely flavour and often a more open crumb. Best when your evening is free but your morning is tight: shape at night, bake fresh at dawn.
At room temperature the yeast breaks starches into sugars and pumps out CO₂. In the fridge the yeast goes dormant while lactic-acid bacteria get busy — they feed on those sugars, thrive in the CO₂-rich, low-oxygen environment, and produce lactic acid. That acid both builds the sour flavour and breaks down gluten. Longer cold time means more acid and a stronger tang, until the bacteria exhaust their fuel. That same gluten breakdown — the gluten is partly “pre-digested” — is why many people with sensitivities tolerate long-fermented sourdough better, and it lowers the glycemic index too.
Shaping & the bake
By the time you shape, the hard thinking is done — what remains is technique. Shaping builds the surface tension that lets a loaf hold its rise; scoring directs where it expands; steam and heat do the rest. None of it is difficult, but each step rewards a little care.
A technique worth trying: shape early, proof in the banneton
Here’s an approach that solves a real problem — how to push fermentation right to the edge without having to handle fragile, over-risen dough. The trick is to do most of the “bulk” rise in the banneton, after shaping.
- Mix and fold on a normal schedule, keeping the dough at 70–72°F.
- Shape after only a 25–50% rise, while the dough is still dense, minimally aerated, and easy to handle.
- Into the banneton it goes — small, with a long way to climb. Stitch it about 20 minutes later.
- Leave it on the counter at least ~4 hours, until it has grown significantly and fills the basket. (Learn the right size for your bannetons — this takes trial and error.)
- Into the fridge overnight, where it rises further and firms up for scoring.
Why it works: shaping dough that has already doubled or tripled is genuinely difficult, and it doesn’t hold up to dividing and preshaping. This method lets you proof to the point of fragility without ever touching the dough in that delicate state — the best of both worlds. (Credit: Laura Hurley.)
Getting better oven spring
- Mix well up front — around seven minutes of hand mixing at the start; longer mixing generally means better spring.
- Use a stronger feeding ratio — 1:5:5 or 1:10:10 rather than 1:1:1, for a more vigorous culture.
- Bulk for the right length — sometimes pushing an extra hour past the transfer to the banneton.
- Score shallowly for the final slash.
But the deepest truth about oven spring isn’t a trick at all: if your starter is active, your gluten well developed, and your proof on point, a single confident score gives results like a professional bakery. Technique compensates for weak fundamentals; it never replaces them.
The five-minute second score
A popular trick for a dramatic “ear”: deep-score the loaf and start baking with steam, then after about five minutes open the oven and cut a second line just beneath the first, turn the loaf, and continue. Side-by-side bakes show a noticeably bigger ear than a single pre-bake score — though, again, a perfectly developed and proofed dough needs only one cut.
The bake
The principle is simple: steam first, then dry heat. Early steam keeps the crust soft so the loaf can spring; removing it later lets the crust set, colour, and crisp.
- Preheat hot — 475–500°F (245–260°C) — and preheat your Dutch oven, steel, or stone with it.
- Dutch oven: about 20 minutes covered (trapping the loaf’s own steam), then about 20 uncovered. One baker’s numbers: 440°F covered for 20, then 420°F uncovered for 20.
- Open bake with a water tray: 30 minutes with steam, then pull the tray and bake ~30 more, often dropping the temperature (say 250°C down to 220°C).
- No Dutch oven? Invert a second pan over your loaf as a lid to trap steam.
And then the hardest step of all: let it cool before you cut. The crumb is still setting as it comes out of the oven, and slicing too early gives you a gummy interior. Patience, one final time — the loaf earns its name.
The recipes
A word before you bake from these. Treat the hydration as your flour’s starting point, the timings as your kitchen’s starting point, and the visual cues from Chapter Six as the real instructions. The same recipe will want small adjustments in your hands — that’s not failure, that’s baking.
Everyday loaves
A reliable beginner’s loaf
Quick four-hour bulk
Built for a big ear & belly
A high-hydration experiment
Baguettes
The couche — a heavy floured linen — cradles each shaped baguette in its own fold so they hold a taut cylinder through the final proof rather than spreading into one another.
Crackling crust, open crumb
Going darker & bigger
Two formulas for when you want depth of flavour or a bigger bake — expressed in baker’s percentages, the language you’ll increasingly think in.
High-hydration, four flours
Malty, dark, aromatic
Discard, not waste
Two ways to use the starter you’d otherwise pour off — both work with active starter too.
Make it with your eyes closed
Chewy, overnight, eight at a time
Diastatic malt powder
For better crust colour and rise, use roughly 0.25–1% of total flour weight — about 1 teaspoon per 3 cups (~500 g) of flour.
Why starter quantity varies so much between recipes
There’s no single “right” amount — it’s a lever. Less starter (say 70 g) ferments slowly for more complex, sourer flavour, more scheduling flexibility, and a chewier crumb. More starter (say 200 g) ferments fast for quicker bakes, a stronger rise, a tender crumb, and a milder taste. More starter also adds its own flour and water, nudging the dough wetter. If your starter is sluggish, use more; if it’s very lively, use less to avoid over-proofing. Start with a recipe, note the result against your schedule and taste, and adjust.
The oven
Everything in this book is achievable in an ordinary home oven with a Dutch oven or a baking steel and a tray of water. Don’t let equipment become an excuse. That said, the limiting factors at home are real: how much steam you can trap, how stable the temperature is, and how many loaves you can bake at once. As bakers scale up — toward a market stall or a small bakery — they start comparing dedicated deck ovens, which hold heat and steam far better than a domestic oven ever will.
If you ever reach that point, the comparison below shows the kind of specifications that start to matter: deck area and loaf capacity, whether steam is integrated, per-deck temperature control, maximum temperature, and of course price. It’s included less as a buying guide and more as a glimpse of the horizon — a reminder of how deep this craft runs.
But that’s a destination, not a requirement. The loaf doesn’t know what it was baked in. It only knows whether the starter was alive, the gluten was strong, and the fermentation was read well. Master those, and a cast-iron pot on a home shelf will carry you further than the finest deck oven in less attentive hands.
The throughline of this whole book is a single shift: stop blindly following instructions and start trusting what you see and feel.
Sourdough is a conversation between you and your dough. The more you pay attention, the more consistent your results become — and the more the process belongs to you rather than to any recipe.