How Coffee Gets Its Flavor
Like Duolingo, but for How Coffee Gets Its Flavor. 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.
20 levels across 4 sections, about 40 minutes end to end, roughly 8 days at five minutes a day. It moves through The Perfect Cup at Home, Developing Your Palate, Buying and Storing, and The Science of the Bean. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in How Coffee Gets Its Flavor
- The 1:16 ratio means 1 ounce of coffee for every 16 ounces of water
- Water at a full boil can scorch grounds, leading to a bitter, burnt taste
- Deviating too far from this ratio makes the coffee either too intense or too watery
- The ideal range is slightly below boiling (195-205°F) to extract natural sugars
- Applying the 1:16 ratio to determine the correct amount of coffee for a standard mug
- Identifying the ideal temperature range to avoid bitter or sour coffee
- Short contact time doesn't pull enough oils and solids out of the bean
- Chlorine and heavy minerals in tap water chemically mask delicate coffee aromatics
- The 1:16 ratio
- Excessive contact time breaks down fibers that create a 'muddy' or dusty mouthfeel
- Filtered water provides a 'clean slate' for the bean's character to shine
- Connecting brew speed to the resulting flavor profile
- Ideal temperature range
- Fresh coffee contains CO2 that pushes water away if not released first
- The bloom phase ensures even saturation of the grounds
- Understanding how water quality affects the clarity of coffee flavor
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 How Coffee Gets Its Flavor 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 have a big 16-ounce mug of water, how much coffee should you invite to the party for a perfect balance?
Get it right to open this lesson and 19 more in the app.
Where How Coffee Gets Its Flavor takes you
Go beyond the morning caffeine jolt. Learn to brew a better cup at home, identify complex tasting notes, and buy the right beans for your palate.
- 1
The Perfect Cup at Home
- The Golden Ratio
- Choosing Your Brew Method
- 2
Developing Your Palate
- Tasting Like a Pro
- Fixing Common Flaws
- 3
Buying and Storing
- Decoding the Coffee Bag
- Protecting the Flavor
- 4
The Science of the Bean
- From Seed to Cup
4 sections · 7 units · 20 levels. Built to play, not to enroll.
You pick the voice
How Coffee Gets Its Flavor is taught in the Explain Like I'm 5 style: no big words. promise.. 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.
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Start How Coffee Gets Its Flavor today.
Download Tomo, search How Coffee Gets Its Flavor, and play your first lesson in under a minute.