Food & DrinkThe BestieBeginner
Brewing the Perfect Cup course icon

Brewing the Perfect Cup

Like Duolingo, but for Brewing the Perfect Cup. 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.

26 bite-size levelsAbout 5 minutes each

Free during early access · No credit card · iPhone & Android

Bennie the Bean
Brewing the Perfect Cup
with Bennie the Bean
26
Levels
3
Sections
5
Min/day
What you'll learn

Key ideas in Brewing the Perfect Cup

  • A scoop measures volume, which ignores the varying density of different beans
  • Higher water ratios dilute the brew strength
  • Darker roasts are less dense and take up more space for the same weight
  • Lower water ratios increase the concentration of coffee solids
  • Why weight is a more accurate measurement than volume for coffee beans
  • How to adjust the water-to-coffee ratio to achieve a specific taste outcome
  • Weight is the only constant measurement across different bean sizes and roast levels
  • Consistency requires repeatable inputs
  • The necessity of a scale for achieving brewing consistency
  • Acids dissolve first, creating sourness in short extractions
  • Heavy plant fibers and tannins dissolve last, creating bitterness
  • Sweetness occurs in the middle of the extraction window
  • Sourness is a sign that the water didn't spend enough time with the grounds
  • Increasing brew time or using a finer grind increases extraction
  • Identifying the sensory characteristics of extraction levels
  • Applying a fix for sour coffee
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 Brewing the Perfect Cup 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.

Why Your Scoop Lies

If you want a cup of coffee that feels lighter and less intense, what should you do with your water ratio?

Get it right to open this lesson and 25 more in the app.

Course map

Where Brewing the Perfect Cup takes you

Stop settling for bitter office coffee and start making cafe-quality drinks at home. Learn the simple tricks to balance flavor and find the beans you actually enjoy.

  1. 1

    Fix Your Morning Brew

    • The Golden Ratio of Water to Coffee
    • Why Your Coffee Tastes Sour or Bitter
    • Choosing the Right Grind for Your Machine
    • The Secret Power of Water Temperature
  2. 2

    Order Like a Pro

    • Decoding the Espresso Menu
    • Milk Textures: Latte vs. Cappuccino
    • Light, Medium, or Dark Roast?
    • What 'Notes of Chocolate' Actually Means
    • The Difference Between Arabica and Robusta
    • How to Read a Coffee Bag Label
  3. 3

    The Journey to Your Kitchen

    • How Altitude Changes the Flavor
    • From Cherry to Bean: The Processing Step
    • What Happens Inside the Roaster

3 sections · 13 units · 26 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Bestie

Brewing the Perfect Cup 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.

Keep going

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Start free

Start Brewing the Perfect Cup today.

Download Tomo, search Brewing the Perfect Cup, and play your first lesson in under a minute.