Food & DrinkThe BestieIntermediate
The Art and Science of Espresso Mastery, a free food & drink course on Tomo

The Art and Science of Espresso Mastery

Like Duolingo, but for The Art and Science of Espresso Mastery. 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.

170 levels across 8 sections, about 340 minutes end to end, roughly 68 days at five minutes a day. It moves through Dialing In the Perfect Shot, The Physics of Milk Texturing, Foundations of Latte Art, Advanced Pouring Techniques, Navigating the World of Roasts, The Espresso Menu and Beyond, Equipment Maintenance and Consistency, and The Chemistry of the Bean. It assumes you already know the basics.

170 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Espresso Eddie, the guide who teaches the The Art and Science of Espresso Mastery course
The Art and Science of Espresso Mastery
with Espresso Eddie
170
Levels
8
Sections
5
Min/day
What you'll learn

Key ideas in The Art and Science of Espresso Mastery

  • Smaller particles pack closer together with less space between them
  • Fast-moving water doesn't have enough time to pull out sugars and oils
  • Tight packing creates more resistance against the water pressure
  • Under-extracted coffee tastes sour, salty, or watery
  • How grind size physically regulates water flow
  • The flavor consequence of a shot that flows too fast
  • A coarse grind offers little resistance, leading to a fast, messy flow
  • Slow flow means the grounds are packed too tight
  • Pale, watery streams indicate the water is passing through too easily
  • Coarsening the grind creates larger gaps for water to pass through
  • Visual identification of a grind that is too coarse
  • Correcting a shot that is flowing too slowly
  • High pressure forces water through the path of least resistance
  • Proper resistance allows pressure to build and emulsify coffee oils
  • Uneven grounds cause water to 'channel' through gaps instead of brewing evenly
  • High pressure is required to create the characteristic foamy texture
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives The Art and Science of Espresso Mastery 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.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

The Physics of the Puck

If your espresso shot gushes out too quickly, what is the most likely result for the flavor?

Get it right to open this lesson and 169 more in the app.

Course map

Where The Art and Science of Espresso Mastery takes you

Move beyond the basic button-press and learn to manipulate pressure, temperature, and milk texture like a professional barista. Master the nuances of roast profiles and pour intricate latte art that tastes as good as it looks.

  1. 1

    Dialing In the Perfect Shot

    • The Relationship Between Grind Size and Flow Rate
    • Using a Scale to Standardize Your Yield
    • Identifying Sourness vs. Bitterness in the Cup
    • Adjusting Temperature for Different Roast Levels
  2. 2

    The Physics of Milk Texturing

    • Stretching vs. Rolling: Creating Microfoam
    • Temperature Thresholds for Sweetness and Stability
    • Troubleshooting Bubbles and Thin Texture
    • Alternative Milks: Adjusting for Fat and Protein Content
    • The Importance of the Vertical Pour Height
  3. 3

    Foundations of Latte Art

    • The Monk's Head: Mastering the Base Layer
    • The Heart: Controlling the Cut-Through
    • The Rosetta: Developing Side-to-Side Rhythm
  4. 4

    Advanced Pouring Techniques

    • The Tulip: Layering and Pushing Foam
    • Etching: Using Tools for Fine Detail
    • Symmetry and Contrast: Judging Your Own Work
    • Speed and Flow Control for Complex Patterns
  5. 5

    Navigating the World of Roasts

    • Light Roasts: Preserving Floral and Fruit Notes
    • Medium Roasts: Balancing Acidity and Body
    • Dark Roasts: Managing Oils and Smoky Flavors
    • The Impact of Degassing and Bean Freshness
    • Single Origin vs. Espresso Blends
    • How Processing Methods Change the Extraction
  6. 6

    The Espresso Menu and Beyond

    • The Cortado vs. The Flat White
    • The Ristretto: Short Shots for Intense Flavor
    • The Lungo: Long Extractions and Clarity
    • Traditional Macchiato vs. Modern Variations
  7. 7

    Equipment Maintenance and Consistency

    • Backflushing and Group Head Hygiene
    • The Role of Water Filtration and Mineral Content
    • Burr Alignment and Grinder Calibration
    • Managing Basket Pressure and Channeling
    • Pre-infusion: Preparing the Coffee Puck
  8. 8

    The Chemistry of the Bean

    • Maillard Reaction: Where the Color Comes From
    • Solubility: Why Some Beans Resist Extraction
    • The Role of Lipids in Crema Formation

8 sections · 34 units · 170 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Bestie

The Art and Science of Espresso Mastery is taught in the 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.

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Start free

Start The Art and Science of Espresso Mastery today.

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