Dried fish

[Yinzer]

Does anybody know where I can find out step by step how to prepare vobla? All I find with a search engine are online sellers, but no actual recipes.
While I'm at it, can anybody suggest a small (around 25cm long) fish that has fewer tiny bones than others?
Thanks!

[gerkin]

When you want to prepare the dried fish, you put it for two days in strong lye and one day in clean, pure water to make it as soft as you want it. Boil it with an addition of salty butter.