Modern Barista Technique
Bridge the gap between basic espresso preparation and professional coffee craft. Learn to dial in by taste, master the physics of puck preparation, steam silky microfoam for consistent latte art, and troubleshoot extraction variables with precision.
Like Duolingo, but for Modern Barista Technique. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
24 levels across 4 sections, about 48 minutes end to end, roughly 10 days at five minutes a day. It moves through Dialing In and Shot Mechanics; Milk Science and Latte Art; Sensory Analysis and Recipe Adaptation; and Water, Equipment, and Workflow. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Modern Barista Technique
- Portafilter baskets are engineered to hold a specific headspace with a set dry mass
- Locking dose first isolates grind and liquid yield as your only active variables
- Changing dose mid-calibration alters puck resistance and brew ratio simultaneously
- Liquid yield dictates extraction cutoff and directly sets final beverage strength
- A few grams difference in yield dramatically changes the acid-to-bitter balance
- Burr shifts require settling and primarily modify puck flow rate rather than ratio
- Extraction time is a passive symptom of water meeting puck resistance
- Stopping a slow shot prematurely cuts off yield, leaving an underextracted cup
- To speed up flow safely, a barista coarsens the grind rather than forcing the timer
- Dark roasts extract easily and favor shorter ratios to tame ash and bitterness
- Medium roasts balance sweetness and acidity best around classic 1:2 ratios
- Light, dense beans dissolve slowly and need longer yields to avoid sourness
- Grind chambers retain several grams of coffee from the previous setting
- Purging old grounds after moving burrs ensures the basket gets the new size
- Taring the portafilter only after purging prevents measuring mixed grind sizes
- Water under 9 bars of pressure takes the path of least resistance through weak spots.
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 Modern Barista Technique 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.
Why should you keep your dry dose locked at one weight when dialing in a new coffee?
Get it right to open this lesson and 23 more in the app.
Where Modern Barista Technique takes you
- 1
Dialing In and Shot Mechanics
- Fast Calibration: The Three-Variable Dial-In
- Puck Preparation and Channeling Dynamics
- 2
Milk Science and Latte Art
- Microfoam Chemistry and Milk Texture
- Free-Pour Latte Art Mechanics
- 3
Sensory Analysis and Recipe Adaptation
- Diagnosing Extraction by Taste
- Adapting to Bean Origin, Roast, and Age
- 4
Water, Equipment, and Workflow
- Water Chemistry for Espresso Extraction
- Grinder Physics and Bar Workflow
4 sections · 8 units · 24 levels. Built to play, not to enroll.
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
Modern Barista Technique 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
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Step behind the commercial machine and master professional barista technique. Learn to dial in espresso by taste, texture silky microfoam, execute standard cafe menus, and keep a high-volume bar running smoothly.
Espresso Mechanics and Barista Craft
Bridge the gap between pulling basic shots and commanding the espresso bar. Master dial-in variables, diagnose extraction flaws by taste, steam silky microfoam, and understand the physics inside the portafilter.
Espresso and Barista Craft
Bridge the gap between pulling basic shots and commanding an espresso bar. Learn the extraction mechanics, microfoam physics, sensory calibration, and station workflows that define professional barista craft.
Espresso Extraction and Technique
Bridge the gap between pulling erratic shots and consistently crafting cafe-quality espresso. Learn the mechanics of puck prep, extraction diagnosis, flow profiling, and microfoam chemistry.
Craft Espresso and Cafe Drinks
Learn the mechanics of dialing in balanced espresso shots, steaming silky microfoam, and constructing specialty coffee shop drinks. Build the palate and technical precision of a craft barista.
Barista Craft and Calibration
Bridge the gap between basic espresso brewing and professional sensory control. Learn how to diagnose extraction flaws by taste, eliminate channeling through puck prep, and texture silky microfoam with precision.
Start Modern Barista Technique today.
Download Tomo, search Modern Barista Technique, and play your first lesson in under a minute.