I simply eat them as they are on club crackers for lunch, or sometimes add a drizzle of mustard on them as well. Having a mild flavor and so soft after having been soaked in oil, that there's not a whole lot that can be done with them during a regular meal except as a side dish with some sort of sauce on them - curry, tomato, dill, etc.
Kippers are whole herring, and generally come from the North Sea. They are sometimes mistaken for large anchovies... which they are NOT! They are a cold smoked sardine.
"Food is our common ground, a universal experience." - James Beard