Allow me to introduce you to a Swedish delicacy: Smörgåstårta (Sandwich cake): https://en.wikipedia.org/wiki/Sm%C3%B6rg%C3%A5st%C3%A5rta

Basically a cake, but made out of layers of white bread and savory things, like for example ham, liver pâté or salmon. The 'frosting' or whatever you want to call it is usually based on mayonnaise or creme fraiche.

It's really good, for the record. You eat it as a main, commonly at festive occasions.