Vol. 1 · Evidence-led coffee education · Est. 2026
Understand coffee, one study at a time.
Coffee Studies is an evidence-led education project covering caffeine, brewing science, beans and origins, instant and decaf coffee, coffee alternatives, and functional coffee. Plain-English answers — every factual claim backed by a citation you can check.
Topics
Explore coffee by subject
Caffeine & Health
What research says about coffee and your body
02Brewing Science
Extraction, ratios, temperature, and grind
03Brew Methods
Every way to make coffee, explained
04Espresso & Coffee Drinks
The coffee drink encyclopedia
05Beans, Roasts & Origins
From plant to roasted bean
06Instant & Decaf Coffee
How soluble and decaffeinated coffee are really made
07Coffee Alternatives
Chicory, matcha, mate, and beyond
08Mushroom Coffee
The species, the science, and who actually makes it
09Functional Coffee
Butter, keto, collagen and protein coffee
10Coffee Business
What it actually costs and takes to open a coffee business
11Barista Skills
Technique, training, and careers behind the bar
12Coffee Equipment
Espresso machine care and coffee storage
Start here
Most-asked coffee questions
Caffeine & Health
Is Coffee Healthy? What Large Studies Actually Show
Caffeine & Health
How Much Caffeine Is in Coffee?
Caffeine & Health
Coffee and Sleep: What Research Shows
Brewing Science
Coffee-to-Water Ratio Explained
Brewing Science
Coffee Grind Size Guide: Which Grind for Which Method
Brew Methods
Pour-Over Coffee Guide: Ratios, Bloom, and Technique
Brew Methods
Cold Brew Coffee Guide: Ratios, Steep Time, Technique
Beans, Roasts & Origins
Arabica vs Robusta: Taste, Caffeine, and Differences
Espresso & Coffee Drinks
What Is Espresso? Pressure, Extraction, the Shot
Latest articles
6 of 209
Recent research and explainers
- Coffee Business
Why Coffee Got So Expensive
Coffee roughly tripled between 2020 and 2025. How the C market works, what actually drove the run, and why robusta rose further than arabica did.
- Mushroom Coffee
Where to Buy Mushroom Coffee, and Subscriptions
Amazon, Target, Whole Foods or direct. What each channel costs you, why the category is subscription-heavy, and how to avoid the cancellation friction.
- Mushroom Coffee
What Does Mushroom Coffee Taste Like?
Not like mushrooms. Earthier coffee with a drier finish, and the thing most likely to disappoint you is the instant base rather than the fungi.
- Mushroom Coffee
RYZE Mushroom Coffee Review: A Label Audit
We audited what RYZE actually discloses about its six-mushroom blend, and what it does not. Verified label findings, price per cup, and the business behind it.
- Mushroom Coffee
Reishi Side Effects, Doses and Interactions
Reishi is the mushroom in coffee blends with real interaction potential. The platelet effect has a dose threshold, and the liver and pregnancy questions answered carefully.
- Mushroom Coffee
Mushroom Coffee Side Effects: What to Know
Most mushroom coffee side effects come from the coffee, not the mushrooms. The real cautions are dose-dependent, and three groups should check with a clinician first.
How we work
Editorial standards
Coffee Studies is published by Nature Lion Inc., the Canadian company behind Shyne Coffee. Editorial content is written to be useful on its own: cautious language, citations to research and official data, and a clear line between what studies show and what they do not. Sponsored placements are always labelled.
Read our editorial approach →