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.


Cocoa & Chocolate Processing

11 – 15 December, 2023 – Koog aan de Zaan

Delve into the world of chocolate with our interactive course that blends engaging theory with practical machine training. Secure your spot in this immersive experience.

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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

Bean to bar machinery
Chocolate Processing

Bean to bar chocolate has been gaining popularity in recent years. The process of making chocolate from scratch has been a tradition for ages. It wasn’t until the industrial revolution that chocolate production became more automated. However, with the rise of

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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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Cocoa beans fermentation
Cocoa Processing

Behind the delicious taste of chocolate, hides a very complex process. Fermentation of cocoa beans is where it all begins. This process is crucial in developing chocolate’s unique flavor, aroma, and texture. It involves converting the sugary pulp surrounding cocoa beans

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Chocolate Machinery - 5 roll refiner
Chocolate Processing

Chocolate is a universally beloved treat, with a rich history and cultural significance. But, behind this lovely treat hides a complex process that requires expertise, precision, and quality machinery. The right chocolate machinery can make all the difference in producing high-quality

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Nut processing equipment
Nuts & Seeds Processing

Nut processing has come a long way over the years, and this has been facilitated by the use of advanced food processing machinery. Nut processing equipment is designed to perform a range of functions including cleaning, roasting, grading, and packaging, among

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Seed processing machine | Royal Duyvis Wiener
Nuts & Seeds Processing

Seed processing is an essential step in ensuring the quality and performance of seeds for planting or consumption. However, it can be a complex and time-consuming process that requires specialized equipment and knowledge. This is where the seed processing machine comes

Read More
Chocolate Processing

Are you in the chocolate industry looking to improve your entire chocolate manufacturing process? Do you want to produce high-quality chocolate mass or delicious hot chocolate with shorter process times? Then you need to know about chocolate mixers. A chocolate mixer

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Tempering Machine for chocolate production
Chocolate Processing

Tempering machines are not only useful for small chocolate production facilities or home use, but also for industrial chocolate production. Industrial chocolate tempering machines have larger bowl capacity, typically made of high-quality stainless steel to ensure durability and ease of cleaning.

Read More
Cocoa bean fermentation process
Cocoa Processing

Did you know that the quality and flavor of chocolate depend on the fermentation process of cocoa beans? The cocoa bean fermentation step is crucial in the chocolate production process, and it affects the taste, texture, and aroma of chocolate. In

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VCA Certification
ISO 9001 Certification