Brewing Great Coffee at Home
Stop settling for bitter, muddy cups. Learn the simple mechanical levers that control coffee extraction, how to diagnose flavor problems, and how to buy fresh beans with confidence.
Like Duolingo, but for Brewing Great Coffee at Home. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 9 levels across 2 sections, about 18 minutes end to end, roughly 4 days at five minutes a day. It moves through Dialing In the Cup and Choosing Beans You Actually Like. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Brewing Great Coffee at Home
- Coffee beans vary in density depending on roast level and origin
- A volumetric scoop holds a different mass of coffee depending on how dense the beans are
- Weighing coffee on a scale guarantees the exact same amount of coffee goes into every brew
- Finer coffee grounds pack tighter, restricting water flow and exposing more surface area for fast extraction
- Coarser coffee grounds leave wide channels for water to drain quickly, requiring longer contact time to extract flavor
- Water directly at a rolling boil tends to over-extract harsh, dry astringency from coffee grounds
- Letting freshly boiled water rest for roughly 30 seconds brings it to an ideal temperature that draws out sweetness and pleasant aromatics
- Changing multiple coffee brewing variables at once hides which adjustment actually solved or caused the problem
- Adjusting a single lever (like grinding one click finer) isolates the specific cause of a bad cup
- Fruity and sour acids dissolve almost immediately when water hits coffee
- Sweet sugars extract next to balance the cup
- Harsh bitter plant matter dissolves last if brewing continues too long
- A sour, puckering taste indicates under-extraction in brewed coffee
- The brew finished before water had enough time to extract the balancing sweet sugars
- Sour acids extract first without sweet sugars to balance them out
- Dry, scratchy bitterness and ashy notes indicate over-extracted coffee
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 Brewing Great Coffee at Home 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.
You use the exact same plastic scoop for two different bags of coffee. What happens to the actual amount of coffee you get?
Get it right to open this lesson and 8 more in the app.
How to learn Brewing Great Coffee at Home, step by step
Go in order. 9 short levels across 2 sections, about 18 minutes in all, five minutes a day.
- 1
Dialing In the Cup
- The Three Levers of Everyday Brewing
- Diagnosing Sour vs. Bitter
- 2
Choosing Beans You Actually Like
- Decoding the Roast Spectrum
- Reading a Coffee Bag
2 sections · 4 units · 9 levels. Built to play, not to enroll.
Questions about Brewing Great Coffee at Home
How do I learn Brewing Great Coffee at Home?
Go in order: start with Dialing In the Cup, then Choosing Beans You Actually Like. On Tomo that's 9 short levels, about 18 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 Brewing Great Coffee at Home?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Brewing Great Coffee at Home is one of its free courses, and you can type any other topic to get a course of your own.
Is the Brewing Great Coffee at Home course free?
Yes. Brewing Great Coffee at Home 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 Brewing Great Coffee at Home?
9 levels across 2 sections, about 18 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 Brewing Great Coffee at Home?
No. It's pitched at a beginner 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
Brewing Great Coffee at Home is taught in the Professor style: clear, structured, thorough. 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 Brewing Great Coffee at Home today.
Download Tomo, search Brewing Great Coffee at Home, and play your first lesson in under a minute.