Dialing In Your Coffee
Like Duolingo, but for Dialing In Your Coffee. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
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 Troubleshooting Your Extraction and Bean Characteristics and Water Dynamics. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Dialing In Your Coffee
- Bright organic acids and salts dissolve almost immediately into coffee.
- Under-extracted brews lack the later-dissolving sugars needed for balance.
- Grinding finer or increasing contact time extracts more balancing sweetness.
- Slow-dissolving plant fibers and heavy polyphenols extract late in the brew.
- Over-extraction produces harsh, lingering bitterness rather than pleasant snap.
- Astringency creates a dry, puckering sensation like stewed black tea.
- A balanced cup maximizes aromatic compounds and complex sweetness.
- The sweet spot occurs right after acidity peaks and before tannins dominate.
- Stopping the brew at peak sweetness avoids harsh, heavy flavors.
- Water finds narrow fissures in the puck, flowing rapidly through them.
- Grounded coffee along the channel over-extracts from excess water flow.
- Denser areas bypassed by water remain cold, dry, and under-extracted.
- A salami shot splits a continuous espresso pull across separate cups.
- Acids and concentrated solubles dominate the first few seconds of a pull.
- Caramelized sugars emerge midway before giving way to astringent bitters.
- Lock your coffee dose and final liquid yield completely fixed
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 Dialing In Your Coffee 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.
Why does an under-extracted coffee often taste sharp, sour, and hollow?
Get it right to open this lesson and 10 more in the app.
Where Dialing In Your Coffee takes you
Move beyond basic brewing by learning how to diagnose extraction, adjust variables intentionally, and unlock the distinct flavor profiles hidden in specialty beans.
- 1
Troubleshooting Your Extraction
- Diagnosing Extraction by Taste
- The Core Dial-In Loop
- 2
Bean Characteristics and Water Dynamics
- Decoding Fermentation and Processing
- Water Composition and Thermal Control
2 sections · 4 units · 11 levels. Built to play, not to enroll.
You pick the voice
Dialing In Your Coffee is taught in the 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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Dialing In Great Coffee
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Dialing In Your Coffee
Move beyond basic recipes by learning to taste extraction flaws and adjust your variables with intention. Master the mechanics of grind size, pour dynamics, and water to brew consistently delicious cups.
Start Dialing In Your Coffee today.
Download Tomo, search Dialing In Your Coffee, and play your first lesson in under a minute.