Flaxseed has played an important role in horse feeding since ancient times. The positive effects of linseed on the horse's digestive tract and coat are well known.

Heinz Keller Futterspezialitäten GmbH is a company that has been involved in the production of feed supplements for 40 years. The ingredients and compositions of the various active ingredients are mainly based on tradition and experience in handling herbal preparations. From time to time, however, the company also commissions technical laboratories to confirm the effect and compatibility of the feed additives using the latest analytical methods. The study in 1989 focused on the effect of linseed.

Heinz Keller's father was a horse dealer. His mother always had to cook linseed so that the horses for sale could be presented well. Heinz Keller couldn't get this out of his head and looked for a simpler solution. Thanks to his many years of experience from his previous job as a product developer in the food industry, he experimented with various processes such as extruding, buffering, roasting and steaming, to name but a few, all of which he ruled out due to poor results.

In 1989, he found the solution for the production of his "real boiled/dried linseed" and had it patented.

So on April 7, 1989, he was able to present this new and unique product, "real linseed cooked/dried", to the public for the first time at the OFFA in St. Gallen. The experts from the equestrian scene immediately recognized the unrivalled properties of this product. As a result, "real LEINSAMEN cooked/dried" soon achieved unparalleled popularity.

It was his greatest wish that this unique product should benefit as many horses as possible. Because "Keller's real linseed boiled/dried" is not only beneficial for the digestive tract and skin and hair, but also makes the muscles, tendons, ligaments, joints and hooves more supple - which is particularly beneficial for riding and breeding.