This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Unfortunately haven’t found that cheaply available in Finland. I know about it too. It’s the only thing I haven’t tried other than straight up sanding it
There’s probably a local equivalent; looks like the primary “ingredient” is Oxalic Acid so a cleaner containing that would probably work just as well
So the legend of bar keepers friend is that it was invented after someone boiled a bunch of rhubarb greens and noticed it cleaned the pan. I reckon any green high in oxalic acid (the main ingredient in BKF) should do similarly enough to the actual product to let you know if it might work.