What is naturally contained in oats should be preserved. When grinding flour, it is possible to produce wholegrain flour as well as flours that only contain a portion of the germ and outer layers. In contrast, the whole grain is used in the production of Kölln oat flakes. Even if you can't tell from the different types of Kölln oat flakes, they all contain parts of the whole grain.
Once the oats have arrived at Kölln in Elmshorn, they immediately resume their journey. Before they become real Kölln oat flakes, they go through more than 33 work stations:
The oats delivered are first cleaned and freed from foreign grain, stones, straw, sand and dust. They are then subjected to a gentle heat treatment, the kilning. This inactivates fat-splitting enzymes (lipases), which would otherwise lead to premature spoilage of the wholegrain oat flakes due to rancidity. At the same time, the starch is partially broken down by the kilning. This leads to better digestibility and the typical, nutty oat aroma develops.
The oats are sorted according to thickness and separated from the husk. The high-quality germ is retained. Husks and fine parts are separated from the oat kernels.
Particularly large oat kernels are flaked directly to produce Regular Rolled Kölln Oat Flakes (firm-tio-the-bite structure = large leaf flakes) flaky. Slightly smaller oat kernels are cut into groats to produce Delicate Kölln Oat Flakes (delicate structure = small leaf flakes). Ground oat kernels (wholegrain oat flour) are processed into Soluble Oats Instant and Schmelzflocken.
The flake production is followed by a fully automatic packaging system.
You can find out how the Kölln flake gets from the field to the bowl in this film!