Espresso and Milk Craft
Move beyond basic brewing recipes and take deliberate control of your espresso machine. Diagnose extraction faults by taste, perfect silky microfoam texture, and dial in beans by roast profile.
Like Duolingo, but for Espresso and Milk Craft. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 10 levels across 2 sections, about 20 minutes end to end, roughly 4 days at five minutes a day. It moves through Diagnosing and Controlling Extraction and Texture, Pouring, and Recipe Design. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in Espresso and Milk Craft
- Acids dissolve first, yielding a sharp, puckering sourness when under-extracted.
- Bitter, astringent polyphenols dissolve last, leaving a dry finish when over-extracted.
- Balanced shots balance early sweetness and acidity against later body and sugars.
- Dry dose only establishes the puck's mass, not how much dissolved coffee ends up in the cup.
- A heavy liquid yield in short brew time means water rushed through, causing severe under-extraction.
- Liquid yield and contact time reveal the actual brew ratio and extraction efficiency.
- Water exploits puck cracks and voids, rushing through localized paths called channels.
- Channeling creates premature blonding and erratic spurts even when the baseline grind size is correct.
- Poor puck prep like clumping or uneven tamping causes channeling, not necessarily grind setting.
- Locking dry dose weight keeps puck resistance and basket headspace completely consistent.
- Holding target liquid yield constant prevents ratio changes from muddying flow diagnostics.
- With dose and yield locked, grind size becomes the sole variable controlling flow time.
- Dry coffee clumps create localized density differences that resist compaction
- Water exploits existing low-density paths regardless of how hard the puck was tamped
- WDT needle stirring homogenizes density throughout the bed before compression
- Dry ground coffee expands significantly as it absorbs incoming brew water
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Espresso and Milk 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.
Here's what playing it feels like
A real question from this course. Take your best guess.
What happens on your tongue when a shot runs far too long?
Get it right to open this lesson and 9 more in the app.
Where Espresso and Milk Craft takes you
- 1
Diagnosing and Controlling Extraction
- Diagnosing Extraction by Taste and Flow
- Puck Preparation and Flow Mechanics
- 2
Texture, Pouring, and Recipe Design
- Microfoam Physics and Milk Texturing
- Adapting Recipes Across Roast Profiles
2 sections · 4 units · 10 levels. Built to play, not to enroll.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Espresso and Milk Craft 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.
More Food & Drink on Tomo
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Start Espresso and Milk Craft today.
Download Tomo, search Espresso and Milk Craft, and play your first lesson in under a minute.