Giesen Roasting Solutions
Production drums, Ulft, Netherlands.
History
Three dates that the sources confuse. In 1988, a metalworker named Bussink began making roaster parts in Ulft, in a workshop called De Eik, the oak: a subcontractor, not a manufacturer. In 2006, after his death, his daughter Karin and her husband Wilfred Giesen took over the business, and Wilfred decided to build whole machines: the W6A was born, and De Eik became Giesen Coffee Roasters. The company was registered in December 2006, KvK 09165753. Twenty-three people on the register.
The W6 became the most visible machine in competitions, “more than ten world champions” according to the company. A second site opened in Dinxperlo in 2022, and on May 9, 2025 the company renamed itself Giesen Roasting Solutions, to say that it now sells software and installations, not only drums.
What it makes
Gas drums (suffix A) and electric ones (suffix E), from 250 g to 140 kg, with an atmospheric burner on the small models, and on the W15E a combination of hot air and infrared panels. Two settings make the case: the negative pressure of the circuit, 80 to 150 pascals, which sets the share of convection, and the drum speed, which sets the share of conduction.
The models
- WPG1 and WPE1: 250 g, sample
- W1A and W1E: up to 1.5 kg
- W6A: W6E, W6A Pro (3 to 6 kg
- W15A and W15E: 7.5 to 15 kg
- W30A: W45A, W60A, W140A Pro (15 to 140 kg, up to 700 kg/h
Giesen Profiler software, from free to 189 euros per month
What you gain
The two levers that remain implicit on many drums are explicit and independent here: you build a profile instead of enduring it, and it is a learning machine. The same vocabulary from 250 grams to 140 kilos makes it possible to develop a profile on the sample roaster and transpose it. Electric exists on the small models, which matters in the city.
What you lose
A drum remains a drum: the bean touches a hot wall, and bean marking remains possible if the negative pressure is poorly set. Electric caps the power, 32 kW for 15 kg on the W15E where the W30A burns 6.9 m³ of gas per hour. The construction of the drums, single or double wall, is not published. And monthly subscription software shifts part of the value of use toward a recurring expense, which is not neutral for an artisan.