Peel both types of vegetables.
First cut the kohlrabi, then the beet with the fine blade of the Spirali.
Wrap the fish fillet with the threads and cook in a steamer (e.g. a bamboo steamer) for a few minutes.
Season to taste.
Finally, pour the melted herb butter over the fish form.
Our tip: As an alternative to fresh herbs, you can also use frozen ones – these also stand out for their fresh taste!