Finnish Fire Spell 

Another word for Molotov Cocktail, an incendiary device used by the Finns during the Winter War, and was first used in the Spanish Civil War, before they were named after Soviet Foreign Minister Vyacheslav M. Molotov, who remarked that the bombing runs on Finland were actually supply drops, which they weren't, as one could guess.

"Did you see those LARPers using their Finnish Fire Spell to light their campfire?"

Finnish Fire Spell by ytphantom April 11, 2019