The Craft of Better Coffee
Like Duolingo, but for The Craft of Better 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.
21 levels across 3 sections, about 42 minutes end to end, roughly 8 days at five minutes a day. It moves through Dialing in the Perfect Cup, Developing a Professional Palate, and Sourcing and Advanced Technique. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in The Craft of Better Coffee
- The golden ratio range is between 1:15 and 1:18 coffee-to-water
- Darker roasts are more porous and less dense than light roasts
- A 1:17 ratio is a common specialty coffee baseline for clarity
- Volume measurements vary wildly based on bean size and air gaps
- Using 340g of water for 20g of coffee hits the 1:17 sweet spot
- Weighing in grams ensures the same amount of coffee material every time
- Applying the golden ratio to a standard brewing setup
- Understanding why mass is superior to volume for consistency
- Decreasing the water-to-coffee ratio increases TDS (strength)
- Ratio changes the concentration of dissolved solids in the cup
- Grind size affects flavor (bitter/sour), while ratio affects body
- Changing multiple variables at once makes it impossible to identify what worked
- Sensory notes must be tied to specific weights and times
- Replication requires exact data on temperature, grind, and ratio
- Using ratio to adjust brew strength
- The workflow of using a brew log to replicate success
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 The Craft of Better 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.
How does the density of a dark roast bean typically compare to a light roast bean?
Get it right to open this lesson and 20 more in the app.
Where The Craft of Better Coffee takes you
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.
- 1
Dialing in the Perfect Cup
- Precision Ratios and Consistency
- The Mechanics of Extraction
- Water Chemistry and Temperature
- 2
Developing a Professional Palate
- Sensory Analysis and Cupping
- Identifying Roast and Quality
- 3
Sourcing and Advanced Technique
- Terroir and Processing
- Advanced Brewing Dynamics
3 sections · 7 units · 21 levels. Built to play, not to enroll.
You pick the voice
The Craft of Better 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.
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Start The Craft of Better Coffee today.
Download Tomo, search The Craft of Better Coffee, and play your first lesson in under a minute.