Hering Hausfrauenart

In my limited time in Austria, I learnt to appreciate various aspects of Germanic culture. Among other things, I become more punctual and more precise - as an Italian I needed to! Regarding food, I appreciated everything that tasted good. This recipe reminds me of Hamburg, but herrings are popular in Trentino and prepared in a similar way. For this you need a schmaltz hering: these are caught during the months when the fish are very fat and are then kept in salted brine for up to a y