We have Fish, We have the ability to dry fish, Give us the ability to shove a stick up it's ass and light it, please!
What am i talking about? Candlefish of course. we have bees's wax and the ability to make wax candles. we have Fat and Tallow Candles, we have candleberries and candleberry wax, why not Candlefish?
The name "candlefish" derives from it being so fat during spawning, with up to 15% of total body weight in fat, that if caught, dried, and strung on a wick, it can be burned as a candle. This is the name most often used by early explorers.
from: https://en.wikipedia.org/wiki/Eulachon
https://en.wikipedia.org/wiki/List_of_f ... meriformes (european Smelt are found near Sweden)
so, while the Candlefish is not nessecarily native to the Nordic area, there ARE Smelt in the area and could potentialy be used for the purpose.