Food & DrinkThe ProfessorBeginner
Coffee and the Barista Craft, a free food & drink course on Tomo

Coffee and the Barista Craft

Like Duolingo, but for Coffee and the Barista Craft. 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.

23 levels across 4 sections, about 46 minutes end to end, roughly 9 days at five minutes a day. It moves through Dialing in Your Everyday Cup; Tasting Notes, Roasts, and Caffeine; Espresso and Milk Architecture; and Where Flavor Begins. It starts from scratch.

23 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Brewster the Bear, the guide who teaches the Coffee and the Barista Craft course
Coffee and the Barista Craft
with Brewster the Bear
23
Levels
4
Sections
5
Min/day
What you'll learn

Key ideas in Coffee and the Barista Craft

  • The ratio of ground coffee to water directly dictates whether a brew tastes watery and weak or concentrated and muddy
  • Adding more coffee grounds relative to water increases strength and body
  • Water straight off a rolling boil scorches delicate aromatics and leaves a bitter, burnt taste
  • Lukewarm water fails to pull sweet flavors out of the grounds, leaving an unpleasantly sour brew
  • Water rested slightly off the boil strikes the balance needed to extract sweet, aromatic notes cleanly
  • Grinding exposes aromatic coffee oils to air, causing them to dissipate within minutes
  • Grinding beans right before hot water hits them protects the cup's fresh scent and flavor
  • Acids and bright sour flavors wash out of the grounds first
  • Sugars and balanced body emerge in the middle of a proper brew time
  • Dry, harsh, bitter compounds pull out last when water contacts grounds too long
  • Grinding finer creates more total surface area exposed to water
  • Higher surface area allows water to dissolve coffee flavors much faster
  • Coarse grounds dissolve more slowly because water cannot reach the core quickly
  • Methods with quick contact time like espresso need fine grinds to extract rapidly
  • Drip methods need a medium grind to balance steady flow with flavor extraction
  • Methods where coffee steeps for minutes like French press need coarse grounds so they don't over-extract
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 Coffee and the Barista Craft 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.

Water, Grounds, and Temperature

Your morning coffee tastes watery, hollow, and thin. What is the most direct fix for your next cup?

Get it right to open this lesson and 22 more in the app.

Course map

Where Coffee and the Barista Craft takes you

Learn to brew better coffee at home and master the essential craft of the barista. Decode roast levels, master grind sizes, understand caffeine myths, and steam silky milk with confidence.

  1. 1

    Dialing in Your Everyday Cup

    • Upgrading Your Daily Brew
    • Grind Size and Extraction
  2. 2

    Tasting Notes, Roasts, and Caffeine

    • Reading Flavor and Body
    • The Roast Spectrum
    • The Truth About Caffeine
  3. 3

    Espresso and Milk Architecture

    • The Mechanics of Espresso
    • Steaming Milk and Drink Ratios
  4. 4

    Where Flavor Begins

    • Beans, Processing, and Freshness

4 sections · 8 units · 23 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Coffee and the Barista Craft 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.

Start free

Start Coffee and the Barista Craft today.

Download Tomo, search Coffee and the Barista Craft, and play your first lesson in under a minute.