Crafting Great Coffee
Like Duolingo, but for Crafting Great 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.
22 levels across 3 sections, about 44 minutes end to end, roughly 9 days at five minutes a day. It moves through Brewing Great Coffee at Home, The Espresso Bar and Milk Craft, and Flavor and Bean Selection. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Crafting Great Coffee
- Desirable sweet and aromatic flavors dissolve first during brewing
- Harsh, drying bitterness dissolves late and should be left behind in the grounds
- Brew ratio controls the concentration (strength and body) of coffee
- Using more ground coffee per ounce of water produces a heavier, richer mouthfeel
- Ratio is distinct from extraction flavor flaws like sourness or bitterness
- Finer coffee grounds expose more surface area and extract flavors very quickly
- Coarse grounds have less exposed surface area and require long contact times to dissolve sweetness
- Espresso uses fine grounds for quick shots, while French press uses coarse grounds for multi-minute steeps
- Water just below boiling (around 200°F / 93°C) efficiently dissolves pleasant acids and sugars
- Rolling boiling water can scorch grounds and aggressively extract harsh, burnt flavors
- Lukewarm water fails to pull out sweet coffee oils, leaving the brew weak and flat
- Sour, sharp, salty notes mean the coffee didn't extract enough sweetness to balance its organic acids
- Drying, tongue-coating bitterness happens when water extracts too deeply into the bitter plant fibers
- Tasting the cup is the primary tool for knowing whether to grind finer or coarser next time
- In immersion, all the water mixes with all the coffee at once, slowing extraction down naturally as the water saturates
- Immersion creates a fuller, heavier body and is far more forgiving on brew time than drip methods
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 Crafting 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 does your brew ratio of coffee grounds to water control?
Get it right to open this lesson and 21 more in the app.
Where Crafting Great Coffee takes you
Learn to brew delicious coffee, steam silky microfoam for latte art, and craft cafe-quality drinks at home. Demystify coffee flavors and understand what makes specialty beans truly shine.
- 1
Brewing Great Coffee at Home
- The Core Levers of a Great Cup
- Manual Brewing: Immersion vs. Percolation
- Dialing In Espresso
- 2
The Espresso Bar and Milk Craft
- The Cafe Menu: Ratios and Drink Specs
- Steaming Microfoam and Pouring Latte Art
- 3
Flavor and Bean Selection
- Tasting and Judging Flavor
- Specialty Coffee and Choosing Beans
3 sections · 7 units · 22 levels. Built to play, not to enroll.
You pick the voice
Crafting Great Coffee is taught in the 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.
More Food & Drink on Tomo
The Craft of the Barista
Learn to brew cafe-quality espresso, steam silky microfoam, and master classic drink ratios. Build professional coffee bar skills through clear extraction math, step-by-step dialing recipes, and clean bar workflow.
Making Great Coffee at Home
Transform your daily brew by discovering what makes coffee taste sour, bitter, or delightfully sweet. Learn to adjust your brew, taste with intention, and pick the right beans every time.
Decoding the Coffee Menu
Stop guessing at the cafe and start ordering with confidence. Learn to distinguish between classic drinks, describe the flavors you actually enjoy, and master the basics of brewing a better cup at home.
The Home Barista
Learn the core mechanics behind cafe-quality espresso drinks. Master dosing, shot timing, grinder adjustments, and milk steaming to pull balanced shots and pour velvety drinks.
The Home Barista's First Shot
Transform your kitchen into a cafe by mastering the fundamental mechanics of espresso and milk. Learn to pull a balanced shot and steam silky microfoam from day one.
Brewing Coffee by Taste
Move beyond rigid recipes and learn to dial in any bean using taste diagnostics, extraction physics, and bean processing knowledge.
Start Crafting Great Coffee today.
Download Tomo, search Crafting Great Coffee, and play your first lesson in under a minute.