Mastering the Fluid Bed: Artisan Roasting
Unlock the precision of air roasting to achieve unparalleled clarity and sweetness. Move beyond drum roasting habits to master high-velocity heat transfer and the physics of levitation.
Like Duolingo, but for Mastering the Fluid Bed: Artisan Roasting. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 26 levels across 3 sections, about 52 minutes end to end, roughly 10 days at five minutes a day. It moves through Dialing in Your First Roast, Precision Profiling and Control, and The Science of the Air Stream.
Free forever · No credit card · iPhone & Android

Key ideas in Mastering the Fluid Bed: Artisan Roasting
- Beans become lighter and more aerodynamic as they lose moisture
- Tipping occurs when heat is too high at the start of the roast
- Higher fan speeds increase the volume of hot air (convective energy) hitting the bean
- Facing is a sign of excessive surface heat relative to bean movement
- Excessive air on light beans can lead to 'lofting' too high, cooling the bean instead of heating it
- A thermal 'flick' indicates the bean's internal energy is releasing too fast
- How to adjust fan speed as beans lose density during the roast
- Identifying visual and thermal indicators of aggressive heat
- High initial density requires high air pressure to start the 'fluid' bed
- As beans expand and dry, they require less pressure to stay agitated
- Final stages require precise air control to prevent scorching while finishing the core
- The relationship between air velocity and bean density during a roast cycle
- Overfilled chambers create dead spots
- Initial air pressure must overcome static weight
- Static beans undergo conductive heating
- The fluid state fountain motion
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 Mastering the Fluid Bed: Artisan Roasting 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.
If you notice the very tips of your beans are blackened or charred, what likely happened?
Get it right to open this lesson and 25 more in the app.
How to learn Mastering the Fluid Bed: Artisan Roasting, step by step
Go in order. 26 short levels across 3 sections, about 52 minutes in all, five minutes a day.
- 1
Dialing in Your First Roast
- Managing Convective Heat Transfer
- The Loft-to-Load Ratio
- Navigating the First Crack in Air
- Post-Roast Cooling and Degassing
- 2
Precision Profiling and Control
- PID Tuning for Fluid Beds
- Rate of Rise (RoR) Dynamics
- Exhaust Temperature as a Proxy
- Compensating for Ambient Humidity
- The Maillard Phase Stretch
- Batch Size and Thermal Inertia
- 3
The Science of the Air Stream
- Fluidization Physics and Bean Density
- Chaff Separation and Airflow Resistance
- Molecular Development in Convection
3 sections · 13 units · 26 levels. Built to play, not to enroll.
Questions about Mastering the Fluid Bed: Artisan Roasting
How do I learn Mastering the Fluid Bed: Artisan Roasting?
Go in order: start with Dialing in Your First Roast, then Precision Profiling and Control, then The Science of the Air Stream. On Tomo that's 26 short levels, about 52 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Mastering the Fluid Bed: Artisan Roasting?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Mastering the Fluid Bed: Artisan Roasting is one of its free courses, and you can type any other topic to get a course of your own.
Is the Mastering the Fluid Bed: Artisan Roasting course free?
Yes. Mastering the Fluid Bed: Artisan Roasting is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Mastering the Fluid Bed: Artisan Roasting?
26 levels across 3 sections, about 52 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Mastering the Fluid Bed: Artisan Roasting?
No. It's pitched at an advanced level, so it starts where you are and builds up. If you can tap a phone, you can start.
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
Mastering the Fluid Bed: Artisan Roasting is taught in 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
Precision Coffee: Dialing and Roasting
Master the variables that define specialty coffee. From the thermodynamics of the drum to the fluid dynamics of the puck, this course bridges the gap between enthusiast and professional.
Coffee Roasting: Heat, Time, and Flavor
Move beyond color presets to master real-time thermal curves and airflow dynamics. Learn how to diagnose roast defects, adapt profiles to bean densities, and steer internal coffee chemistry for your target brew method.
Small-Batch Drum Coffee Roasting
Learn to master heat control, airflow, and roast curves on a 2kg drum roaster. Build consistent production habits from real-time sensory diagnostics to cupping table adjustments.
Coffee Roasting and Bar Science
Bridge the gap between your production drum and your espresso bar. Master thermodynamic roast profiling, water chemistry dynamics, and high-yield extraction physics to optimize shop consistency and green bean investment.
Precision Coffee Brewing
Move beyond the scoop and learn to control the variables that define a perfect cup. Master the math of ratios, the physics of extraction, and the chemistry of water to achieve professional consistency at home.
Coffee Extraction, Chemistry, and Terroir
Master the physics of extraction, water mineral kinetics, fermentation biochemistry, and roast thermodynamics. Designed for experienced coffee professionals and passionate enthusiasts ready to move beyond the basics.
Start Mastering the Fluid Bed: Artisan Roasting today.
Download Tomo, search Mastering the Fluid Bed: Artisan Roasting, and play your first lesson in under a minute.