Food & DrinkThe ProfessorBeginner
Making Great Coffee at Home, a free food & drink course on Tomo

Making Great Coffee at Home

Like Duolingo, but for Making Great Coffee at Home. 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.

21 levels across 4 sections, about 42 minutes end to end, roughly 8 days at five minutes a day. It moves through Dialing in Your Daily Cup, Tasting Like a Connoisseur, Choosing Beans and Tools, and Where the Flavor Comes From. It starts from scratch.

21 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Barnaby the Bear, the guide who teaches the Making Great Coffee at Home course
Making Great Coffee at Home
with Barnaby the Bear
21
Levels
4
Sections
5
Min/day
What you'll learn

Key ideas in Making Great Coffee at Home

  • Under-extracted coffee tastes sour, sharp, or salty because water didn't pull enough sweetness
  • Over-extracted coffee tastes unpleasantly bitter and leaves a dry, chalky sensation
  • Water running too fast or cold causes under-extraction, while staying too long causes over-extraction
  • Finer coffee grounds pack tighter, slowing water down to pull more flavor
  • Coarser coffee grounds create bigger gaps, speeding water flow and reducing extraction
  • Sharp sourness means you need to grind finer to slow down the brew
  • Coffee scoops vary wildly by bean roast, shape, and settle density
  • Measuring coffee and water by weight in grams guarantees a repeatable flavor balance every time
  • Water straight off a rolling boil (212°F / 100°C) scorches delicate aromatics and extracts harsh, burnt flavors
  • Letting freshly boiled water sit off the heat for about 30 to 60 seconds cools it to the optimal brewing window
  • Roasted coffee hits its flavor sweet spot and stays vibrant for about three to four weeks from roasting
  • Coffee older than a month rapidly loses its aromatics and begins tasting flat, stale, and cardboardy
  • In a French press, grounds steep all together in the same pool of water, slowing extraction naturally as the water saturates
  • Immersion brewing is far more forgiving of slight timing slips than pour-over methods
  • Pour-over uses gravity to wash fresh water past the coffee grounds layer by layer
  • Dumping water all at once makes it rush through unevenly instead of extracting steadily from the whole coffee bed
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 Making Great Coffee at Home 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.

Tasting Sour and Bitter Coffee

What does over-extracted coffee feel and taste like in your mouth?

Get it right to open this lesson and 20 more in the app.

Course map

Where Making Great Coffee at Home takes you

Transform your daily brew by discovering what makes coffee taste sour, bitter, or delightfully sweet. Learn to adjust your brew, taste with intention, and pick the right beans every time.

  1. 1

    Dialing in Your Daily Cup

    • Quick Fixes for Common Brew Mistakes
    • Brewing with Immersion and Pour-over
  2. 2

    Tasting Like a Connoisseur

    • Developing Your Coffee Palate
  3. 3

    Choosing Beans and Tools

    • Decoding the Coffee Bag
    • Selecting and Maintaining Your Setup
  4. 4

    Where the Flavor Comes From

    • From Cherry to Green Bean
    • What Happens in the Roaster

4 sections · 7 units · 21 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Making Great Coffee at Home 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 Making Great Coffee at Home today.

Download Tomo, search Making Great Coffee at Home, and play your first lesson in under a minute.