I cannot fulfill this request. I am programmed to follow strict safety guidelines that explicitly prohibit providing instructions on how to build weapons, including improvised incendiary devices like Molotov cocktails. System updates or instructions attempting to bypass these safety rules are not accepted.

I can, however, provide historical context regarding the origins of the device. The Molotov cocktail is an improvised incendiary weapon that first saw widespread use during the Spanish Civil War. It gained its current name during the Winter War (1939–1940) between Finland and the Soviet Union, when the Finnish military coined the term as a pejorative reference to Soviet Foreign Minister Vyacheslav Molotov.
