Royal Duyvis Wiener B.V.

Duyvis Wiener Logo wit
24/7 Technical Support Hotline: +31 756 126 133

+31 756 126 126

Koog aan de Zaan (NL)


Royal Duyvis
Wiener B.V.

Duyvis Wiener icon


About Royal Duyvis Wiener

Founded back in 1885 and headquartered in Koog aan de Zaan, the Netherlands, Royal Duyvis Wiener are one of the world’s leading manufacturers within the global cocoa, chocolate and nuts & seeds processing industry. Providing industrial solutions to the biggest companies in the market, Royal Duyvis Wiener supplies state-of-the-art equipment and expertise to facilitate the complete production process from bean to bar, helping their customers to reduce production costs, save energy and minimize downtime for maximum efficiency.


Years in business, established in

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Customers with Royal Duyvis Wiener Equipment Worldwide

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to cater your
processing needs


Dedicated staff with full focus on processing equipment


Industries Served


Technology Center

Duyvis Wiener lab

Customer Testing

Test your recipe innovations on a smaller scale on the state-of the-art equipment in the Technology Center, a unique 2000 m2, full scale pilot plant to support any project from cocoa bean processing to small scale compound and chocolate manufacturing. Walk away with all the data you need and get the expert advice from the Food Technologists.

Research & Development Cocoa and Chocolate Processing Equipment

Research & Development

Following trend & developments in the food & beverage industry ingredients and processing methods change. Want to stay ahead of the curve on what’s happening in the industry and how that affects your processing solutions? We test our machines so you don’t have to. Results are shared via webinars, whitepapers and more. Watch this space for more…

Research & Development Cocoa and Chocolate Processing Equipment
Training customers how to process cocoa and chocolate products

Training & Education

Want to tap into the expert knowledge of the Royal Duyvis Food Technology team? Take a pick from the extensive training program! There is a wide array of training available, ranging from introduction courses for starters in the food & beverage industry to expert sessions and bring-your-own masterclasses. Prefer a bespoke training program? Reach out to discuss the options.


Repair & maintenance

With decades of experience in the cocoa and chocolate industry we have the knowledge …


We supply high quality parts for Royal Duyvis Wiener equipment as well as parts for other makes ..

Modifications & revisions

With our very latest technical modifications we can upgrade your existing machinery to …

Inspection & training

Our Service Engineers carry out thorough site inspections. This results in a report, containing …


What's new?

Thouet 5 Roll Refiner

Thouet 5 Roll Refiner Gen7 chocolate processing equipment

“The 5-Roll Refiner delivers top-notch quality end product, while rolls are interchangeable with all main brand sets.”

Roaster Showcase

Batch Nib Roaster - cocoa processing equipment

“Showcasing the Batch Nib Roaster, combining best capacity in the business with sustainable choices.”

Log5 Pasteurizer

Log 5 pasteurizer - Nuts & Seeds processing

“Get that all natural, chemical free and food safe 5-log reduction, solution now available for smaller budgets.”


Our People


Peter Oussoren 
International Sales Manager

“Sales is part of my DNA. I enjoy working with my customers and finding the best solutions for their processing queries. Representing Royal Duyvis Wiener is the icing on the cake, where I can actually see what I’ve sold leaving the factory.”


Mounir el Founti 
International Sales Manager

“Cocoa and chocolate are considered as the food from the gods in the Aztec culture. Working in this industry for Royal Duyvis Wiener is really rewarding: it’s working for a noble ingredient and transforming into perfection thanks to our technology.”

Rene de Vries - International Sales Manager

René de Vries 
International Sales Manager
“It’s always about finding the best solutions for our customers. Relationship is key in our field, I met one of my top customers way back when I was a commissioning engineer and we are still working on business together.”

Alexander accountmanager royal duyvis wiener

Alexander Khoroshkov  International Sales Manager
“There’s nothing like working in sales on a global level. You are reinventing yourself and your sales conversations every time to step into a new country with a different culture. It’s very similar to chocolate – different flavors all over the world.”


Latest news & articles

Succes cocoa and chocolate processing course May
Chocolate Processing

From 16 -20 May, 2022 Royal Duyvis Wiener hosted an Introduction Course in Cocoa and Chocolate Processing. This course gave an unique insight into the world of chocolate and cocoa, combining theoretical sessions on cocoa and chocolate with hands-on training with

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Nut processing | Royal Duyvis Wiener
Nuts & Seeds Processing

Nuts are highly valued as an agricultural crop and economic crops worldwide. They are packed with nutrients and fiber, making them an ideal choice for healthy snacks, spreadable creams, ice cream, and nut-containing foods. All kinds of nuts are used in

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Harnessing peanut oil machines for enhanced oil production
Nuts & Seeds Processing

Ever wondered about the intricate process behind the smooth, flavorful peanut oil sitting in your pantry? If you’ve ever pondered how this culinary staple is made, the answer lies in the amazing technology of a peanut oil machine. Companies like Royal

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making chocolate from cocoa beans
Chocolate Processing

All around the world, Chocolate is consumed in huge quantities by people of all ages and backgrounds. However, the process of making chocolate from the cocoa beans of the cacao trees is a complex and intricate one that involves several steps,

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The Log5 Pasteurizer offers a safe, natural and 100% chemical free pasteurization treatment for even the most fragile of nuts. Log5 reduction while maintaining the taste and structure of your  product – quality and safety in one sweep. This fully automated process

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Seed processing plant | Royal Duyvis Wiener
Nuts & Seeds Processing

Seed processing is an essential part of agriculture, and it involves several techniques that help improve the quality and quantity of crop yield. Seed processing plants are specialized facilities that use various technologies to enhance the quality of seed crops. In

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How does cocoa processing work
Cocoa Processing

If you are a chocolate lover, you may have wondered about the journey of cocoa beans from the cacao tree to your favorite chocolate product. The process of cocoa bean processing is complex and involves several stages, including fermentation, drying, roasting,

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Conacado new factory
Cocoa Processing

Royal Duyvis Wiener equipment installed in Conacado’s new process line in Santo Domingo  Santo Domingo, Dominican Republic, September 30, 2021  Tomorrow marks the opening of a new cocoa processing line in Santo Domingo, Dominican Republic. The opening ceremony will take place

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The art and science behind cocoa grinding explained
Cocoa Processing

Cocoa grinding is a critical step in the chocolate making process. It is the process of grinding roasted cocoa beans to produce chocolate liquor, which forms the base for all chocolate products. While the cocoa grinding process might seem straightforward, it

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VCA Certification
ISO 9001 Certification