Protein coffee — proffee — went viral on TikTok, but does it actually work? Here's what the science says about caffeine plus protein, plus how to mix it without clumps.
The dehydration myth, debunked with the actual research. Coffee is 98–99% water. Moderate daily consumption does not cause net dehydration — and the early studies that started this myth had significant methodological problems.
The problem with freezing coffee was never cold — it was condensation. The vacuum-sealed single-dose protocol both physicists actually use, step by step.
We tested 5 espresso grinders under $600 plus a stretch pick. The $139 hand grinder outperformed the $200 electric. Here's where to put your money.
CO2 outgassing inflates crema nearly 2x and drops extraction yield 1–2 points. Rao's fresh bean trap, and the 7–21 day rest window for espresso.
Gagné analyzed 300 particle size distributions across 24 grinders. Here's what the physics says about why the grinder — not the machine — decides your cup.
Turbo shots pull in 15-20 seconds at a coarser grind and hit 80% of max extraction with more aroma than traditional pulls. The Smrke 2024 and Hendon 2020 science, and how to dial one in.
Kopi luwak is marketed as the world's rarest coffee. The reality: caged civets, rampant counterfeiting, and a mediocre cup James Hoffmann calls cruel and overhyped.
Espresso martini, Irish coffee, carajillo, coffee negroni, and 4 more -- eight coffee cocktail recipes with barista tips and ingredient ratios.
We compared 6 WDT tools plus a DIY build. Normcore v4 and Foretype lead for most home baristas — here's why needle gauge and depth matter more than price.
The Ross Droplet Technique cuts grinder static by 50% and retention by 75%. Here is the peer-reviewed science and how to apply RDT at home.
DiFluid R2 vs VST LAB Coffee III — which refractometer should you buy? We compare accuracy, price, and real-world workflow for home espresso.
Rao's tests show 10-50 lb tamp force has no measurable effect on extraction. Here's the physics, the proof, and what actually matters in your tamp.
The complete history of third wave coffee — from Peet's in 1966 to the fourth wave debate. Who coined the term, what it actually means, and how four roasters and one auction changed coffee forever.
Pressure profiling explained — Rao's 3-phase model (preinfusion, full pressure, decline), why it beats flat 9-bar, and how to start on any machine.