Only in Norway could caustic soda be advertised as something to cook your fish with (“luting” being the verb for making “lutefisk”–a dish commonly served at Christmas, no less).
![luting](https://xanawu.com/wp-content/uploads/2011/09/luting.jpg)
An apt description by a Norwegian-American named Dave Fox:
Norwegians didn’t invent lutefisk because they thought it was tasty. A long time ago, in the pre-refrigeration epoch, salting and drying fish was an efficient way to preserve it. They soaked it in lye afterward to pull the salt out and — believe it or not — make it more palatable. A century ago, lutefisk really was a staple in the Norwegian diet. Also a century ago, a lot of Norwegians fled the country.