Giesen
Sources: Giesen (website)
Giesen Roasting Solutions (formerly Giesen Coffee Roasters, rebranded 2025) is a Dutch drum roaster manufacturer based in Dinxperlo, Gelderland, Netherlands. The company began in 1988 as a metalworking shop called “De Eik,” founded by Mr. Bussink. In 2006, Karin Bussink and Wilfred Giesen pivoted the business to coffee roasters and launched the W6A. The company is family-owned. A purpose-built facility in Dinxperlo opened in 2022. (source: Giesen (website))
Giesen claims 30 million cups of coffee per day are roasted on its machines globally. (source: Giesen (website))
Product Line
All Giesen machines are drum roasters with gas (A) or electric (E) variants. Controls include steplessly adjustable airflow (underpressure), drum speed (RPM), and temperature. (source: Giesen (website))
| Model | Min batch | Max batch | Throughput | Notes |
|---|---|---|---|---|
| WPG1 | — | — | — | Sample roaster; specs not published |
| W1A / W1E | — | ~1 kg | — | Entry production |
| W6A / W6E | 3 kg | 6 kg | up to 24 kg/h | Handcrafted; coffee shop machine |
| W6A Pro | 3.5 kg | 7 kg | — | Larger footprint; gas only |
| W15A / W15E | — | 15 kg | up to 75 kg/h | — |
| W30A / W30A Pro | — | 30 kg | up to 150 kg/h | External cyclone included as standard |
| W45A Pro | — | — | — | Industrial; fully automated cycle |
| W60A Pro | — | — | — | Large-scale industrial |
| W140A Pro | — | — | — | Largest model |
The electric W6E variant requires 400V three-phase supply (17 kW max). (source: Giesen (website))
Control parameters (W6 series specs)
- Airflow (underpressure): 80–150 Pa; default 110 Pa
- Drum speed: 36–51 Hz; default 46 Hz
- Temperature setpoint: 100–250°C; default 200°C
- Sound level: 70 dB(A)
Sample Roaster — WPG1
Giesen offers a sample roaster (the WPG1) at the small end of its range, positioned for profile development and training. Capacity, pricing, and detailed specifications were not published on the website at the time of crawl. Willem Boot has featured it in educational content (“Behind the Roast with Willem Boot — Sample Roasting Strategies with WPG1”). (source: Giesen (website))
The WPG1 is a drum roaster — a different category from the fluid-bed and hot-air sample roasters dominant in specialty competition contexts (IKAWA, ROEST, Kaffelogic, Nucleus Coffee Tools). See Sample Roasters for the full comparison.
Software
Giesen Profiler
Giesen’s native roast control software, running directly on the roaster. Key features:
- Full manual mode or fully automatic roasting
- Smart Triggers: programmable automated actions at target temperatures (e.g., reduce gas when beans reach a set point)
- Real-time adjustment of temperature, drum speed, and airflow
- Roast profile saving and replay
- Free for all users (as of at least 2025) (source: Giesen (website))
Giesen.Cloud
Cloud-based dashboard integrating all Giesen software products. Modules: Inventory, Profiles, Roasts, Planning, Live monitoring, and roaster overview. Accessible from any device. Roast plans created in Giesen.Cloud sync to Profiler on the roaster in real time. (source: Giesen (website))
Accessories
| Accessory | Function | Compatibility |
|---|---|---|
| Destoner | Removes stones and metal from green beans | All models |
| External Cyclone | Chaff separation; plug-and-play | W6/W15 optional; W30+ standard |
| GCC (Green Coffee Conveyor) | Automated green bean transport | — |
| Emission Cleaning System | Air filtration / VOC control | — |
| Pellet Press | Compresses chaff into briquettes (1820×1515×1470 mm) | W30 / W45A / W60A / W140A Pro |
| Silo Systems | Modular green coffee storage (small / medium / custom) | — |
| Green Coffee Loading Station | Ergonomic intake point for green bean processing | — |
(source: Giesen (website))
Notable Customers
Giesen names the following customers in marketing materials:
- Belleville Brûlerie (Paris) — featured in video and community content; confirms Belleville uses a Giesen roaster
- Ethica Coffee Roasters (Canada) — W6A + W15A since 2015; quoted: “precise as hell in possibilities”
- Alrighty (Germany) — W15E
- Rigano, Dinzler, Brandzaak — named in community section
- Willem Boot — featured in educational “Behind the Roast” content
Relevance to Kaiserblick
Giesen’s W6A or W15A would be natural candidates for a dedicated production roasting setup at Kaiserblick’s scale. Their full ecosystem — WPG1 sample roaster, production W6/W15/W30, industrial W60A+, and native Giesen.Cloud + Profiler software — makes them a single-vendor roasting infrastructure option.
The Belleville connection is additionally relevant: Belleville Brûlerie is a WoC Brussels 2026 target and a confirmed Giesen customer, which provides a natural conversation anchor for direct outreach.
Roxanne Fredericksen was trained by Steve Diedrich — see Diedrich Roasters for another US drum roaster manufacturer with personal significance to Kaiserblick.