A baking guide for people who ship.
Sourdough, finally explained in a language you already speak. Your starter is a long-running process. Proofing is a race condition. The oven is production, and production runs hot.
no YAML
You can debug a distributed system. You cannot make bread.
It’s not a skill gap. It’s a documentation problem. Every sourdough guide was written for people who bake by intuition, and you were trained to distrust intuition.
“Until it feels right”
Not a spec. Not a threshold. Not testable. You need numbers, tolerances, and a definition of done — and every recipe refuses to give you one.
Twelve-hour feedback loops
You change one variable and find out whether it worked half a day later. That’s the slowest test suite you have ever run, and you can’t parallelize it.
Nobody explains the state
Your starter is a live culture with a memory of everything you’ve done to it. Every guide treats it as an ingredient. It’s a process, and it has uptime.
Eleven chapters. Zero vibes.
Every step has a target number, a failure mode, and a way to tell whether it worked before you commit six more hours to it.
This is what the whole book sounds like.
No mysticism, no grandmothers, no “you’ll just know.” Targets, tolerances, and what to do when you miss them.
6.2 — Why Your Timer Is Lying to You
Every recipe you’ve read gives bulk fermentation as a duration. Four hours. Five hours. Overnight. This is the single most misleading number in baking, because duration isn’t the input — it’s the output.
The actual input is temperature. Fermentation roughly doubles in speed for every 8°C you add. Your kitchen in July and your kitchen in January are two different runtimes:
kitchen_temp = 18°C → bulk ≈ 7h 30m
kitchen_temp = 22°C → bulk ≈ 4h 45m
kitchen_temp = 26°C → bulk ≈ 3h 00m
Four files. One download.
Delivered instantly. Yours permanently. Free updates for as long as the book exists.
The book — PDF & EPUB
148 pages, 40 annotated crumb photographs, fully cross-referenced. DRM-free, both formats, one download.
The hydration calculator
A spreadsheet. Enter your flour weight and target hydration, get every other number. Handles starter contribution properly, which most don’t.
Timing cheat sheet
One printable page. Bulk fermentation times by kitchen temperature, from 16°C to 28°C. Designed to be taped inside a cupboard door.
The failure atlas
Twenty-three ways a loaf goes wrong, photographed, with the root cause and the fix for the next attempt. Sorted by symptom, not by cause.
From people who have read it.
“Chapter 6 reframed proofing as a race condition and something in my brain finally clicked. I had been treating a temperature problem as a time problem for three years. Three years.”
“I have bought nine sourdough books. This is the only one that told me what number to look for instead of describing a feeling I was supposed to already have.”
“The failure atlas alone is worth the money. I matched my loaf to photo 14, found the cause, and fixed it on the next bake. Docking a star because I now bake constantly and own a scale that measures to 0.1g.”
One price. No subscription. No course.
A book, three tools, and a permanent download link.
- ✓ Sourdough for Developers — 148 pages, PDF and EPUB
- ✓ The hydration calculator spreadsheet
- ✓ Printable timing cheat sheet
- ✓ The failure atlas — 23 photographed failure modes
- ✓ Free updates for the life of the book
- ✓ DRM-free. Yours to keep, on every device you own.
Before you buy
Do I need to be a developer to read this?
No, but it helps. The book leans on systems concepts — state, scheduling, race conditions, rollback — as a way of explaining fermentation. If those words mean something to you, the explanations will land faster. If they don’t, everything is still defined in plain language the first time it appears.
Do I need special equipment?
A digital scale and a way to read your kitchen’s temperature. That’s genuinely it. There’s a short section on what’s worth buying later and a much longer one on what isn’t — a proofing box, a banneton set, and a $200 Dutch oven are all on the second list.
I’ve already killed two starters. Is this too late?
Chapter 2 exists specifically for you. Most starters aren’t killed, they’re abandoned on day 4 or 5, during the stall that every new culture goes through and almost no guide warns you about. There’s a day-by-day account of what should be happening, including the days where nothing appears to be.
What format is it, and can I print it?
PDF and EPUB, both included, both DRM-free. The PDF is laid out for A4 and US Letter and prints cleanly in black and white, apart from the crumb photographs, which you’ll want in colour. Print as many copies as you like for your own use.
Is there a course, a community, or a coaching upsell?
No, no, and no. It’s a book with three tools attached. You buy it once, you download it, and I will never email you about a masterclass.