Dialing In Great Coffee
Move beyond basic brew ratios and step into true cup control. Learn to diagnose extraction flaws, manipulate thermal and mineral variables, and read green bean processing like a roaster.
Like Duolingo, but for Dialing In Great Coffee. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Controlling the Extraction and Tasting and Sourcing with Intent. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Dialing In Great Coffee
- Light organic acids and salts dissolve almost immediately on water contact.
- Mid-extraction yields sweet complex carbohydrates and aromatic oils.
- Heavy bitter plant fibers and polyphenols only extract late in the brew.
- Total Dissolved Solids (TDS) measures concentration, not overall brew quality.
- Under-extraction occurs when water extracts too few soluble bean compounds.
- High TDS combined with low extraction yield makes an intensely sour, heavy cup.
- Under-extraction leaves a quick, sharp sourness without balancing sweetness.
- Over-extraction coats the tongue in a parching, lingering, sandpaper finish.
- Balanced extraction anchors vibrant acidity with smooth, sweet body.
- Adjusting grind size shifts surface area and extraction without altering ratio.
- Changing water dose or bean weight alters strength alongside extraction yield.
- Grinding coarser slows extraction rate to curb harshness while keeping brew ratio.
- Water paths of least resistance over-extract grounds directly in the stream.
- Bypassed sections of the bed remain largely untouched and under-extracted.
- Channeling dumps harsh polyphenols and sharp raw acids into the same final cup.
- Fines dissolve almost instantly and restrict drawdown flow
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 Great 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.
What begins washing into your cup during the middle stage of extraction?
Get it right to open this lesson and 11 more in the app.
How to learn Dialing In Great Coffee, step by step
Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.
- 1
Controlling the Extraction
- The Sour-Bitter Spectrum
- Flow, Turbulence, and Water Chemistry
- 2
Tasting and Sourcing with Intent
- Sensory Profiling and Temperature Drift
- Deciphering Processing and Density
2 sections · 4 units · 12 levels. Built to play, not to enroll.
Questions about Dialing In Great Coffee
How do I learn Dialing In Great Coffee?
Go in order: start with Controlling the Extraction, then Tasting and Sourcing with Intent. On Tomo that's 12 short levels, about 24 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Dialing In Great Coffee?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Dialing In Great Coffee is one of its free courses, and you can type any other topic to get a course of your own.
Is the Dialing In Great Coffee course free?
Yes. Dialing In Great Coffee is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Dialing In Great Coffee?
12 levels across 2 sections, about 24 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Dialing In Great Coffee?
No. It's pitched at an intermediate level, so it starts where you are and builds up. If you can tap a phone, you can start.
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
Dialing In Great Coffee 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.
More Food & Drink on Tomo
Dialing In Better Coffee
Move beyond following rigid recipes and learn how extraction mechanics shape every cup. Diagnose sour or bitter off-notes, tune your grind and flow, and brew coffee with intention.
Dialing In Specialty Coffee
Diagnose extraction flaws by taste and take control of brew variables. Learn how particle size, processing methods, and water chemistry transform your daily cup from dull or bitter into vibrant and balanced.
The Craft of Better Coffee
Move beyond the morning caffeine hit and learn to manipulate extraction, water chemistry, and bean genetics to brew the perfect cup.
Tuning Your Brew
Move beyond following recipes and learn to manipulate the variables of extraction to fix any cup of coffee.
The Craft of Better Coffee
Move beyond the morning caffeine hit to understand the variables that define a perfect cup. Learn to manipulate extraction, analyze flavor profiles, and source beans like a professional.
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.
Start Dialing In Great Coffee today.
Download Tomo, search Dialing In Great Coffee, and play your first lesson in under a minute.