Diethelm Keller Household Brands is a market leader in the design, manufacturing, and marketing of innovative household, kitchen, and interior-design products.
The company employs around 160 people and operates renowned brands such as Zyliss, Cole & Mason, AdHoc, Swissmar, and Culinare, which are sold in over 50 countries. The Group also holds the brand rights for Koenig and Turmix under a licence agreement with a Swiss distributor.
For further information on the brands, please click on the logos below:
Board of Directors
Thomas Aebischer, Chairman
Flora A. Keller
Max-Gustav A. Keller
Founded in 1951 by Swiss inventor Karl Zysset, Zyliss has transformed the way we prepare food. Thanks to its cleverly engineered kitchen tools, everyday cooking was made easier and more enjoyable. Shaped by a Swiss tradition of precision and practicality, the company became known for breakthrough inventions such as the iconic garlic press, onion chopper, and salad spinner. Building on this pioneering spirit, Zyliss continues to evolve its portfolio while staying true to its focus on precision, quality, functional design and solving real kitchen challenges. Today, Zyliss is entering a new era defined by timeless aesthetics, multi-functionality, and responsible innovation. With a growing emphasis on sustainability, the brand incorporates eco-friendly materials such as wheat straw to reduce the use of virgin plastic and relies on recycled or recyclable packaging. Product guarantees of up to ten years underline its commitment to durability. Sold in over 50 countries, Zyliss continues to strengthen its global presence by combining Swiss heritage, functional innovation, and environmental responsibility. Looking ahead, the brand plans to expand further into Swiss food culture with tools for fondue, raclette, and other traditional culinary experiences. Zyliss was acquired by Diethelm Keller Group in 1984.
Visit www.zyliss.com
CEO
Jacob Østerhaab
Founded as a London giftware business in 1919, Cole & Mason soon evolved beyond its original focus. It expanded into home essentials and introduced its first wooden seasoning mill in 1946. This early inno vation marked the beginning of the brand’s longstanding commitment to flavour and performance. By combining traditional craftsmanship with ad vanced technology and carefully selected materials, Cole & Mason creates devices that enhance everyday cooking, including pepper and salt mills, spice grinders, and seasoning accessories. Each product reflects a balance of function and design, with close attention to detail, durability, and usability. Today, Cole & Mason is a trusted partner for cooks of all skill levels. United by the purpose of bringing out the fullest flavour in every meal, the brand continues to stand for quality, innovation, and a passion for seasoning. Diethelm Keller Group acquired full ownership of Cole & Mason in 2006.
Visit www.coleandmason.com
CEO
Jacob Østerhaab
AdHoc emerged in Germany in 1995 with the ambition to design kitchen and home accessories that combine functionality with contemporary design. The portfolio includes products such as spice and pepper mills, tea infusers, oil and vinegar dispensers, and selected table top accessories. From the outset, strong technical expertise and a wide range of European design influences shaped the brand’s development. The consistent inter play of form, function, and durable quality has since defined what makes AdHoc distinctive. Over the years, AdHoc has evolved from a primarily function-driven brand into a design-led lifestyle brand. Today, its collections stand for refined sim plicity, intuitive everyday use, and a timeless aesthetic. Numerous international design awards reflect this development and underline AdHoc’s positioning in the premium home and kitchen segment. AdHoc has been part of Diethelm Keller Group since 2019. The Group’s involvement has supported the brand’s international expansion and its focus on innovation and design.
Visit www.adhoc-design.de
CEO
Jacob Østerhaab
Since 1983, Swissmar has evolved from a small im porter of European kitchenware – primarily active in North America – into a globally recognised brand. Known for quality, innovation, and culinary traditions, Swissmar focuses on products that bring people together and celebrate shared dining. Guided by its motto “Bringing life to the table”, the brand offers raclette and fondue sets, cheese accessories, and tabletop products designed for togetherness and enjoyment. Diethelm Keller Group became a significant share holder in 2020 and has since acquired full ownership of the brand.
Visit www.swissmar.com
CEO
Jacob Østerhaab
Culinare was established over 30 years ago with the launch of the original Magican, a product that has since sold over 18 million units. It became so successful worldwide that it formed the basis of the Culinare brand. Now offering essential kitchen gadgets to make food preparation quicker, easier and safer, Culinare offers an extensive range at affordable prices.
Visit www.culinare.com
CEO
Jacob Østerhaab
"Since its inception in 1954, Koenig stands for "enjoyable moments" and delights its clients with quality workmanship, powerful and reliable appliances for both indoor and outdoor use. This diverse range of products, which is mainly distributed in Switzerland, spans from coffee machines to premium quality gas grills." Significant investments in product development will lead to a number of new product launches. Accelerated marketing efforts will strengthen the brand, while new partnerships in attractive markets will increase the international footprint.
Electrical continues to focus on building the Koenig brand, launching another wave of new products and expands into new distribution channels. Additional investments in brand marketing will further support our efforts to make Koenig a leading brand in its Swiss home market.
The Brand Koenig is licensed by Tavora Brands AG, Switzerland .
Visit www.koenigworld.com
With decades of Swiss heritage, Koenig and Turmix are well-established brands with a long tradition in kitchen and household appliances. Over time, they have combined experience with practical innovation, developing small appliances that meet everyday needs at home. Their portfolios include products for food preparation, breakfast, coffee, and general house hold use, such as blenders and mixers under the Turmix brand, as well as coffee machines and toasters under the Koenig brand – all designed for intuitive handling, dependable performance, and durability. Diethelm Keller Group owns the Koenig and Turmix brands, while product development, distri bution, and market activities are managed by a Swiss licence partner.
Visit www.turmix.com