Category: Coffee Knowledge
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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, Origami, or Kalita Wave produce completely different results with the same beans and recipe? The truth is simple: Pour-over coffee has too many invisible variables. At Vihi, we turn these unknowns into measurable engineering structures. 01｜Filter…
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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, Origami, or Kalita Wave produce completely different results with the same beans and recipe? The truth is simple: Pour-over coffee has too many invisible variables. At Vihi, we turn these unknowns into measurable engineering structures. 01｜Filter…
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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 often described as “unpredictable.” Same beans, same steps — different results. But in engineering, unpredictability simply means a variable that has not yet been measured. At Vihi, our mission is clear: We turn what once felt…
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Origami Dripper: Ultimate Field Guide to Geometry, Filters, Flow, Grind & Recipe Matrix (with Troubleshooting)
Origami Dripper: Ultimate Field Guide to Geometry, Filters, Flow, Grind & Recipe Matrix (with Troubleshooting) Contents 1) Geometry First 2) Filter Papers: Types & Fit 3) Flow Targets & Timing 4) Grind Matrix (EK / 64-mm flat / conical) 5) Pro Recipes (light / medium / dark) 6) Troubleshooting (collapse, stall, sour/bitter) 7) Further Reading…
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Flower (Lily) Dripper × V-Fold: Paper Pre-Shaping for Collapse-Free, Stable Flow & Repeatable Flavor
Flower (Lily) Dripper × V-Fold: Paper Pre-Shaping for Collapse-Free, Stable Flow & Repeatable Flavor Contents 1. Overview 2. Why Flower/Lily Drippers Suffer from Instability 3. Geometry First: Paper Shape, Ribs & Air Channels 4. What V-Fold Does (Pre-Shaping Logic) 5. How to Use V-Fold with a Flower Dripper 6. Baseline Recipes & Timing Targets 7.…
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Origami Filter Collapse: Complete Scientific Guide, Experiments & Real Solutions
Origami Filter Collapse: Complete Scientific Guide, Experiments & Real Solutions Contents 1. Why Origami Collapse Happens 2. The Real Geometry Problem: Pleat Inconsistency 3. Airflow Failure: The True Cause of Collapse 4. Water Load & Bloom Pressure 5. Controlled Experiments 6. Real Solutions (Ranked) 7. Why V-Fold Improves Stability 8. FAQ 1. Why Origami Collapse…
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Origami Dripper vs V-Fold: Geometry, Flow, Paper Stability & The Complete Scientific Guide
Origami Dripper vs V-Fold: Geometry, Flow, Paper Stability & The Complete Scientific Guide Contents 1. Overview 2. Why Origami Is Highly Sensitive to Paper Geometry 3. The Main Issue: Filter Collapse & Rib Inconsistency 4. Flow Rate Variance: Origami vs Kalita Wave 5. How V-Fold Improves Origami Stability 6. Origami vs V60 vs Kalita (Scientific…
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Kalita Wave vs V60: Clarity vs Consistency (Data Inside)
Kalita Wave vs V60: Clarity vs Consistency (Data Inside) Contents Overview Geometry Differences Flow Behavior Results: TDS & Sensory Which to Choose Stabilizing Wave with V-Fold FAQ Overview Kalita Wave favors repeatability; V60 favors clarity & expressiveness. We compare geometry, flow, and taste. Geometry Differences Wave: flat bed, pleated paper, multi-point drainage V60: cone +…
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Kalita Wave 155 Complete Guide: Geometry, Flow, Grind, Recipes & V-Fold Forming
Kalita Wave 155 Complete Guide: Geometry, Flow, Grind, Recipes & V-Fold Forming Contents Overview Geometry & the 38.3° Target Flow Dynamics & Stability Grind Size Matrix Pro Recipes (155) Fixing Paper Variance with V-Fold 155 FAQ Overview Kalita Wave 155 is a flat-bottom dripper emphasizing stability and repeatability. The biggest real-world variable is paper geometry…
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Kalita & Kalita Wave: Complete Research-Grade Guide
Kalita & Kalita Wave — The Complete, Research-Grade Guide Table of Contents What is Kalita? Why the Kalita Wave Matters Wave Geometry (155/185) Flow Dynamics & Stability Grind Size Matrix Professional Recipes Kalita vs V60 FAQ What is Kalita? Kalita is a Japanese brand famous for its flat-bottom drippers. Unlike cone-shaped brewers, Kalita emphasizes flow…