Hook knife (with steel) is now on sale.

You can dig into the dents in the kuksa and the scooping part of the spoon.
A hook knife made of "double-layer blue steel". It cuts out dents that cannot be done with a regular knife. If you are right-handed, press the ridge of the blade (on the opposite side of the blade) with your finger toward the front, or if you are left-handed, sharpen it. The steel type uses extremely soft iron as the base metal. It is sharp and easy to sharpen. The handle is made of high-quality natural wood "Zelkova". The rounded handle makes it easy to handle. Comes with a cover to protect the blade, so you can store it safely.

“ Hook knife (with steel) ” introduction here