Research & journal

Notes from the bench

Experiments, materials and measurements from the VIHI lab — 186 published notes and counting.

December 21, 2025

Why Filter Paper Matters More Than You Think: Flow Rate, Extraction, and Consistency

Why Filter Paper Matters More Than You Think In pour-over coffee, most discussions focus on grinders, grind size, water temperatur…

December 21, 2025

Why the Same Dripper Never Brews the Same Coffee: An Introduction to Dripper Structural Engineering

Why the Same Dripper Never Brews the Same Coffee In pour-over coffee, one question keeps coming back: Why is it so difficult to re…

December 15, 2025

A Complete Breakdown Of Random Variables In Pour Over Coffee 2...

Explore a complete breakdown of random variables in pour over coffee 2 with clearer structure, comparison sections, FAQ links, and…

December 15, 2025

Vihi & The 4R Framework: A Systemic Sustainability Strategy from Material Science to Circular Economy

Vihi & The 4R Framework: A Systemic Sustainability Strategy from Material Science to Circular Economy Sustainability is not a mark…

December 14, 2025

A Complete Breakdown of Random Variables in Pour-Over Coffee

A Complete Breakdown of Random Variables in Pour-Over Coffee Why do people call pour-over coffee “unpredictable”? Why can V60, Ori…

December 14, 2025

Turning Mystery into Engineering: How Vihi Redefines Pour-Over Coffee

Turning Mystery into Engineering: How Vihi Redefines Pour-Over Coffee In many parts of the coffee community, pour-over brewing is…

December 14, 2025

Dripper Structural Engineering A Technical Whitepaper By Vihi...

Explore dripper structural engineering a technical whitepaper by vihi design with clearer structure, comparison sections, FAQ link…