Sourdough Beyond the Recipe
Move past rigid clock-watching and develop true dough intuition. Learn to calibrate starter acid, diagnose fermentation cues by touch, build structural tension, and master steam for dramatic oven spring.
Like Duolingo, but for Sourdough Beyond the Recipe. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 11 levels across 2 sections, about 22 minutes end to end, roughly 4 days at five minutes a day. It moves through Controlling the Fermentation Curve and Shaping Structure and Oven Dynamics. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Sourdough Beyond the Recipe
- Inoculating sourdough at peak catches wild yeast at maximum population and gas production
- Waiting past peak allows sourdough lactic and acetic acid to accumulate excessively
- Excess acid activates sourdough proteases, which break down gluten elasticity
- Higher feeding ratios give microbes more fresh fuel, which delays sourdough peak time
- Diluting with higher ratios does not alter the underlying microbial balance of the starter
- Adjusting sourdough feed ratios is purely a timing tool to schedule your bake
- Warmer sourdough fermentation temperatures stimulate bacterial acid generation faster than yeast
- Cooler room-temperature sourdough fermentations tilt microbial balance toward yeast gas production
- Sourdough yeast activity drops sharply in cold temperatures while bacteria continue producing mild acid
- A young, sweet sourdough levain introduces minimal acid load into the final dough
- Lower acid levels preserve the dough's gluten matrix, yielding superior oven spring
- High acid starters break down dough structure, leading to a gummy or dense crumb
- Warm dough ferments rapidly during shaping and chilling, requiring a lower bulk rise (often 30-50%).
- Cold dough takes hours to cool in the fridge, so it needs a much higher bulk rise (often 75-100%).
- Targeting a single fixed volume rise across different dough temperatures causes severe under-proofing.
- Internal gas pressure arches dough upward, creating a domed surface with curved meniscus edges at the wall.
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Sourdough Beyond the Recipe the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What happens if you leave your peaked starter sitting on the counter for hours before mixing?
Get it right to open this lesson and 10 more in the app.
Where Sourdough Beyond the Recipe takes you
- 1
Controlling the Fermentation Curve
- Calibrating Starter Inoculation and Acid Load
- Reading Bulk Fermentation by Dough Cues
- 2
Shaping Structure and Oven Dynamics
- Building Structural Tension Without Degassing
- Engineering Oven Spring and Crust Blistering
2 sections · 4 units · 11 levels. Built to play, not to enroll.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Sourdough Beyond the Recipe is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Sourdough Beyond the Recipe today.
Download Tomo, search Sourdough Beyond the Recipe, and play your first lesson in under a minute.