Specialty Coffee: Dialing In Flavor
Bridge the gap from casual home brewer to confident palate. Master the levers of extraction, calibrate water and grind geometry, and connect roast chemistry directly to the cup in your hand.
Like Duolingo, but for Specialty Coffee: Dialing In Flavor. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
28 levels across 4 sections, about 56 minutes end to end, roughly 11 days at five minutes a day. It moves through Mastering the Extraction Levers, Developing the Specialty Palate, Controlling the Invisible Variables, and Tracing Flavor from Farm to Roast. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Specialty Coffee: Dialing In Flavor
- Sour salts and bright organic acids are the most soluble compounds and dissolve into the water first.
- Sweet complex sugars dissolve more slowly, adding balance and body during the middle of the brew.
- Heavy, bitter plant fibers and astringent polyphenols dissolve last after prolonged water contact.
- Under-extraction leaves an aggressive sour punch that lacks sweetness and disappears rapidly on the palate.
- Over-extraction pulls out harsh polyphenols that cause astringency, drying out your mouth like oversteeped black tea.
- Balanced extraction captures sweetness and acidity in harmony, producing a pleasant, rounded aftertaste.
- Locking dose and total water weight holds brew ratio and beverage strength steady while troubleshooting.
- Grinding coarser decreases surface area and speeds flow, reducing total extraction to eliminate bitterness.
- Changing multiple recipe variables at the same time obscures which adjustment actually cured the defect.
- Brew ratio controls beverage concentration (TDS) and texture, determining how heavy or light the coffee feels.
- Grind size controls surface area exposure and flow rate, dictating which flavor compounds dissolve.
- Grinding finer creates more surface area and extends contact time, pulling the brew out of the sour zone.
- Navigating the Coffee Compass requires altering a single parameter to steer flavor toward central sweetness.
- Adding more water without altering grind over-dilutes the coffee and risks channeling rather than boosting sweetness.
- Blooming requires roughly two to three times the dry coffee dose in water
- Trapped carbon dioxide gas repels water and prevents even coffee saturation
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 Specialty Coffee: Dialing In Flavor 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 dissolves during the middle of your brew to bring sweetness and body to the cup?
Get it right to open this lesson and 27 more in the app.
Where Specialty Coffee: Dialing In Flavor takes you
- 1
Mastering the Extraction Levers
- The Extraction Balance
- Pour-Over Flow Dynamics
- Dialing In Espresso Parameters
- 2
Developing the Specialty Palate
- Cupping and Sensory Calibration
- Deciphering Origin and Roast Labels
- 3
Controlling the Invisible Variables
- Water Chemistry for Brewing
- Grinder Mechanics and Particle Distribution
- 4
Tracing Flavor from Farm to Roast
- Post-Harvest Processing Chemistry
- Roasting Physics and Transformations
4 sections · 9 units · 28 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
Specialty Coffee: Dialing In Flavor 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 Specialty Coffee: Dialing In Flavor today.
Download Tomo, search Specialty Coffee: Dialing In Flavor, and play your first lesson in under a minute.