I recently learnt to make this dish from the local fishermen in Krabi. When they go out to sea they often make this easy protein rich pickled fish since it does not require cooking or freezing the fish prior to eating it. They accompany this dish with Thai spirits but it goes just as well with aquavit - This is a way of eating fish that all you Nordics and Japanese are very familiar with. Pickling is fun and easy. Give it a try!