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Article · Thursday, July 9, 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 BongartsOther23 editions
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Specialty coffee · Worth knowing
Thursday, July 9, 2026
Specialty coffee · Worth knowing

Single-dose grinders hit the value line; retention science matters

1 min read

Turin DF64 Gen 2.5

€319 buys you what used to cost three times as much.

Turin's new DF64 Gen 2.5 swaps the static-electricity fight for a plasma generator built into the chute—ion probes that neutralize clumping before grounds fall into your portafilter [Quelle: Espresso Outlet]. The 64mm flat burrs stay compatible with aftermarket options (DLC, SSP High Uniformity, multi-purpose), stepless adjustment handles espresso through pour-over, and sub-gram retention means you're not re-grinding yesterday's fines. Heavy metal construction, fewer electronics to fail.

The grind-consistency jump is real enough that serious home roasters are trading up.

Retention and workflow

Low retention isn't just a spec—it's workflow oxygen.

Pour-over grinders like the Bentwood Vertical models hold roughly 2.5 to 3 grams in the spout after grinding, a number that matters when you're rotating between three single-origin filter coffees in one session [Quelle: GHGBS]. Tight burr tolerances and chamber design keep dust minimal; a metal cup tapped against the chute clears residue without a knocker. The practical win: you flip coffees without cross-contamination muddying your palate.

Retention science just became the invisible hand in cup clarity.

Sources
Turin DF64 Gen 2.5 Single Dose Coffee Grinder - Espresso Outlet LLC
Turin DF64 Gen 2.5 Single Dose Coffee Grinder - Espresso Outlet LLC
19 hours ago ... The Gen 2 takes coffee grinding to new heights with a host of updates and innovative features that promise to elevate your coffee brewing experience.
espressooutlet.com
AI Summary

The Turin DF64 Gen 2.5 represents a significant advancement in single-dose grinding technology, introducing a cutting-edge plasma generator that reduces static electricity during grinding for more consistent particle distribution and elimination of clumping. The grinder features low retention design (typically under a gram of residual grounds), heavy-duty metal construction, 64mm flat burrs compatible with extensive aftermarket options, and stepless adjustment allowing precise grind size tuning for espresso, pour-over, and other brewing methods. Key innovations include a redesigned inner chute with ion generator probes, versatile burr compatibility including stainless steel and optional DLC or SSP High Uniformity and Multi Purpose burrs, and a minimalist design with fewer electronic components to reduce failure points. At approximately €319, the grinder competes effectively with machines priced two to three times higher in terms of build quality and grind consistency, making it a value-oriented option for specialty coffee professionals who demand precision grinding for diverse brewing applications.

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Maintaining low grounds retention for your pour over grinder
Maintaining low grounds retention for your pour over grinder
19 hours ago ... ... Coffee equipment. We encourage you to stop by often for informative tech talk around grinding + brewing excellence, and even a few GH euphemisms along the ...
ghgbs.com
AI Summary

Maintaining low grounds retention is a key technical consideration for specialty coffee professionals using pour over grinders, particularly with the Bentwood Vertical 63 and 75 models. The article addresses practical FAQs including methods to clear the spout without a knocker using a metal cup tap method, clarifying that minimal dust remains in the grind chamber due to tight burr tolerances and specific chamber design, and noting that approximately 2.5 to 3 grams of coffee typically remain in the spout when grinding for filter coffee. This technical guidance supports workflow efficiency when rotating between multiple coffees, reflecting the craft-focused approach to specialty coffee equipment optimization.

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