Pickling herrings involves soaking (brining) herrings
in a liquid with salt, sugar and spices. Lightly salted herring is a
very popular traditional dish not only in Russia, but also in Holland,
Sweden, Germany, Denmark and some other northern countries. In Russia
traditional lightly salted seledka was always served under sliced onions
as a classical snack (“zakuska”) with vodka.
To make it you can use fish such as herring, mackerel
and sardines. It can be used as a starter on its own, in salads and
sandwiches, and even as a main course with boiled potato (russian
version fish & chips).