The oldest written mention of this pasty dates back to 1686, and after WWII it spread nationwide when roughly 420,000 evacuated Karelians carried the recipe with them across Finland.
A thin rye crust is shaped into an open oval and filled with creamy rice porridge, then baked until the edges turn crisp and blistered. It's eaten warm, spread with munavoi — a mix of chopped hard-boiled egg and butter — from bakeries and market stalls across North Karelia.
Muikku (Fried Vendace)