The Professional Barista
Like Duolingo, but for The Professional Barista. 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.
Free forever · No credit card · iPhone & Android
Key ideas in The Professional Barista
- Increasing yield extracts more sugars and bitterness to balance acidity
- Dose determines the resistance of the puck and the headspace in the group head
- Yield has a more dramatic impact on flavor balance than contact time alone
- Inconsistent dosing makes it impossible to diagnose grind or yield issues
- Using yield to correct flavor imbalances
- The necessity of dose consistency for shot repeatability
- Crema is trapped CO2 that adds volume without adding coffee mass
- Bean density and gas content make visual volume an unreliable metric for yield
- Changing multiple variables at once masks which one caused the flavor shift
- Isolating yield first is the standard protocol for fine-tuning balance
- Light roasts are less soluble and require more water to extract fully
- Dark roasts are highly porous and can easily over-extract at long ratios
- Adapting the brew ratio to different roast profiles
- Widening the burr gap creates larger coffee particles
- Larger particles have less total surface area for water to touch
- Reduced surface area slows down the extraction rate of the shot
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 Professional Barista 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.
Picture the coffee puck as a structural barrier—what variable primarily determines the resistance and headspace inside the group head?
Get it right to open this lesson and 20 more in the app.
Where The Professional Barista takes you
Move beyond basic brewing to master the precision, chemistry, and workflow of a high-end specialty coffee bar.
- 1
Precision Extraction
- Dialing in for Balance
- Mastering the Grinder
- 2
Texture and Presentation
- The Science of Microfoam
- Precision Latte Art
- 3
Workflow and Quality Control
- High-Volume Bar Efficiency
- Diagnosing Extraction Issues
- 4
The Science of Flavor
- Water Chemistry and Origin
4 sections · 7 units · 21 levels. Built to play, not to enroll.
You pick the voice
The Professional Barista is taught in the The Storyteller style: every lesson is a story. 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 Professional Barista today.
Download Tomo, search The Professional Barista, and play your first lesson in under a minute.