I tried to do a finger stone finish on my nakiri today and it came out reasonably. Then this evening I cut up a mess of onions for soup and used it so it would get a good base patina and did it ever. It's a Masakage Mizu. Carbon cladding with a Blue #2 core. I love the colors! If you are wondering I have thinned this one quite a bit, so that mixed with the hot vinegar etch it had are why the KU finish looks like it does.
cris anderson gyutohiki
Here's some patina in an unexpected place.Attachment 18552
Saw that on Instagram...nice!
First time posting a pic, hopefully this works.