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Article · Saturday, September 12, 2026

Specialty coffee · Worth knowing

One thing happening in the world of Specialty coffee today, written for an enthusiast — not a beginner. Skip celebrity gossip. Focus on craft, gear, results, interesting characters, or a small story I'd actually tell a friend over coffee. Quality over quantity.

By Marius BongartsOther65 editions
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Specialty coffee · Worth knowing
Saturday, September 12, 2026
Specialty coffee · Worth knowing

Filter engineering beats brand hype, Boise's brew school expands

1 min read

Filter Pore Size & Technique

Your filter's pore size shapes your cup more than you think.

Paper filters at 10–20 microns deliver clarity; metal filters at hundreds of microns pull more body and oils; cloth lands between them, depending on weave [Quelle: Carmel Coffee]. The bleached-versus-unbleached debate is noise—oxygen-bleached white filters from specialty roasters are the standard, and taste differences vanish once you rinse properly with hot water to strip papery flavor and preheat your gear. Pre-rinsing isn't optional if you're chasing extraction precision.

Chemex bonded squares for max clarity, Hario V60 for the specialty benchmark, Kalita Wave for forgiving consistency—pick your clarity trade-off and brew accordingly.

Boise Brew School Expands Offerings

Dawson Taylor is betting serious on hands-on coffee education.

Their expanded Boise lineup now covers Introduction to Specialty Coffee (flavor wheel and processing deep-dives), Brew School (French press, Hario V60, Aeropress technique isolation), World of Specialty Coffee (terroir and geography), formal cupping with grading instruction, equipment optimization, and cold brew science labs [Quelle: Dawson Taylor]. Private and group sessions run parallel to open classes, targeting both enthusiasts and businesses hunting consistent brewing standards. This signals that roasteries are moving beyond bag sales into repeatability.

The roastery that teaches wins loyalty—and retention through skill transfer beats single-origin scarcity play.

Geisha Processing & Extraction Guides

Achilles Coffee just published the precision playbook Geisha deserves.

Their guides detail Geisha varietal processing methods alongside pour-over agitation technique—pour height, flow rate, and extraction timing—because roasting precision means nothing without brew precision [Quelle: Achilles]. They're also unpacking acidity beyond pH, diving into titratable acidity and professional tasting frameworks so roasters can source with intention rather than prestige pricing alone. Direct trade sourcing pairs with education—the roastery isn't just selling beans, it's selling repeatability.

When a roaster publishes its extraction logic, it reveals whether sourcing serves the cup or the margin.

Sources
DAWSON TAYLOR EVENTS
DAWSON TAYLOR EVENTS
15 hours ago ... Overview on the creation of specialty coffee, with a focus on the coffee flavor wheel and processing and roasting methods. BREW SCHOOL. Introduction to using ...
dawsontaylor.com
AI Summary

Dawson Taylor Coffee Roasters offers a comprehensive lineup of classes for specialty coffee enthusiasts, including Introduction to Specialty Coffee with focus on the coffee flavor wheel, processing and roasting methods, Brew School covering French press, Hario V60, and Aeropress techniques, World of Specialty Coffee exploring geography's influence on flavor, formal cupping sessions with grading instruction, Perfect at Home Coffee covering brewing methods and equipment optimization, and Amazing Iced Coffee demonstrating multiple cold brew techniques with brew science explanation. The roastery also provides customizable private classes for groups and businesses.

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The Humble Coffee Filter: A Geek's Guide to the Most Overlooked ...
The Humble Coffee Filter: A Geek's Guide to the Most Overlooked ...
22 hours ago ... Chlorine bleaching. The older, cheaper method. Uses chlorine compounds and can leave trace organochlorine residues. Largely phased out of specialty coffee. If ...
carmelcoffeeroasters.com
AI Summary

The article provides a comprehensive guide to coffee filters for specialty coffee enthusiasts, covering the engineering and performance characteristics that impact final cup quality. It explains how pore size determines the trade-offs between clarity and body, with paper filters (10-20 microns) producing the cleanest cup, metal filters (hundreds of microns) delivering more body and oils, and cloth filters landing in between. The piece debunks the bleached versus unbleached debate, clarifying that oxygen-bleached white filters from reputable brands are the standard in specialty coffee and that taste differences are negligible when filters are properly rinsed. A key technique highlighted is pre-rinsing filters with hot water to remove papery flavor and pre-heat brewing equipment. The guide ranks popular specialty coffee filters including Chemex bonded squares for maximum clarity, Hario V60 filters as the specialty coffee benchmark, and Kalita Wave filters for forgiving, consistent results, while offering practical alternatives like metal and cloth reusable filters for different flavor profiles and the context of brewing traditions.

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Buy Single Origin Coffee | Achilles Coffee Roasters San Diego
17 hours ago ... Buy Single Origin Coffee Online at Achilles Coffee Roasters. A Specialty Coffee Roaster ... roasting techniques, and precise brewing methods. We source our ...
achillescoffeeroasters.com
AI Summary

Achilles Coffee Roasters is committed to meticulous roasting techniques and precise brewing methods, sourcing beans from global partners through direct trade relationships where possible. The roastery publishes detailed guides for specialty coffee enthusiasts covering topics like Gesha coffee varieties and their processing methods, pour-over agitation techniques including pour height and flow rate effects on extraction, and coffee acidity beyond pH measurement including titratable acidity and professional tasting precision.

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