How We Test & Review Coffee Gear
In short: Every recommendation on MasteringCoffee comes from hands-on use, not spec sheets. I buy or borrow the gear, brew with it for weeks in a real home kitchen, and only recommend what I’d keep myself. Affiliate links never change which products make the cut.
I’m Patrick Astoul, and I’ve been brewing coffee at home since 2014 — pour-over, espresso, French press, AeroPress, cold brew, Moka pot, and more. This page explains exactly how reviews and recommendations on this site are made, so you can judge how much to trust them.
Our Principles
- Hands-on, not spec-sheet. If I haven’t actually brewed with a machine or grinder, I don’t review it as if I had. Roundups based on research are labeled as such.
- Real home conditions. Testing happens in a normal kitchen with normal water and normal beans — the same conditions you brew in, not a controlled lab (unless a test explicitly says otherwise).
- Long enough to matter. First impressions lie. I live with gear for weeks before forming an opinion, because the things that break or annoy you show up over time, not on day one.
- Honest about downsides. Every product has trade-offs. If something is loud, fiddly, or overpriced, I say so — that’s the whole point of a review.
- Affiliate-independent. I earn a commission if you buy through some links, but that never decides the ranking. Products earn their spot on merit. See my disclosure.
What “Tested” Means on This Site
When an article says a product was tested, it means I personally brewed with it over an extended period and evaluated it on the criteria below. When a piece is a research-based roundup (comparing models I haven’t all owned), it’s labeled that way and built from manufacturer specs, owner feedback, and trusted third-party data — never presented as first-hand testing.
What We Evaluate
| Category | What I look at |
|---|---|
| Brew quality | Taste in the cup, consistency shot-to-shot or pot-to-pot, temperature stability |
| Ease of use | Setup, daily workflow, learning curve, how forgiving it is for beginners |
| Build & durability | Materials, how it holds up over weeks of daily use, common failure points |
| Cleaning & maintenance | How easy it is to keep clean, descaling needs, replacement parts |
| Value | Price vs what you actually get, and who it’s right (and wrong) for |
Where We Get Our Numbers
Reference values on this site — brewing ratios, water temperatures, grind sizes, extraction targets — follow widely accepted specialty-coffee standards (such as the SCA brewing range of 195–205°F) and are kept consistent across every article. Where a figure is contested in the coffee world, I say so rather than stating it as settled fact.
A Note on Independent Measurements
I’m expanding this site toward published, first-hand measurements — things like timed thermal-retention curves for travel mugs and presses, brewed with the same protocol so the numbers are directly comparable. When those tests are live, each will include the full method and the raw data so you can check the work yourself. Until a given test is published, I won’t claim a number I haven’t measured.
Corrections
If you spot something inaccurate, tell me and I’ll fix it. Coffee gear and best practices change, and articles are updated with a visible “last updated” date when they do.
About the author: Patrick Astoul — home barista since 2014, founder of MasteringCoffee.com.