Food & DrinkExplain Like I'm 5Intermediate
Barista: The Art of Extraction course icon

Barista: The Art of Extraction

Like Duolingo, but for Barista: The Art of Extraction. 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.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Bennie the Bean
Barista: The Art of Extraction
with Bennie the Bean
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in Barista: The Art of Extraction

  • The 1:15 to 1:17 ratio is a starting baseline for most filter brewing
  • Finer particles expose more coffee surface to water for faster extraction
  • Decreasing the water-to-coffee ratio increases the concentration and body
  • Smaller gaps between coffee particles create more resistance to water flow
  • Flavor preference overrides standard recipes once the baseline is established
  • Coarser grinds allow water to pass through quickly with less contact time
  • Using the Golden Ratio as a starting point rather than a final destination
  • Relating grind size to extraction speed and surface area
  • Bright, sharp acids extract first in the early stage of the shot
  • Using the Golden Ratio as a starting point
  • Sweetness and sugars develop in the middle of the extraction
  • Under-extracted shots are characterized by sour, salty, or sharp notes
  • The flavor progression of espresso yield from start to finish
  • Short contact time prevents the water from pulling out sweet sugars
  • Relating grind size to extraction speed
  • Dose consistency ensures the same amount of coffee is used every time
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 Barista: The Art of Extraction 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.

Finding the Sweet Spot

Why do very tiny, fine coffee particles give up their flavor to the water so quickly?

Get it right to open this lesson and 11 more in the app.

Course map

Where Barista: The Art of Extraction takes you

Move beyond basic brewing to master the variables that define a perfect espresso. Learn to manipulate grind, temperature, and milk chemistry to create cafe-quality drinks with precision.

  1. 1

    Dialing In for Flavor

    • Dialing In by Taste
    • Managing Extraction Variables
  2. 2

    Texture and Precision

    • The Physics of Microfoam
    • Precision Workflow

2 sections · 4 units · 12 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
Explain Like I'm 5

Barista: The Art of Extraction is taught in the Explain Like I'm 5 style: no big words. promise.. 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.

Start free

Start Barista: The Art of Extraction today.

Download Tomo, search Barista: The Art of Extraction, and play your first lesson in under a minute.