The name “Molotov cocktail” was coined by the Finns during the Winter War. The name is an insulting reference to Soviet Foreign Minister Vyacheslav Molotov, who was responsible for the setting of “spheres of interest” in Eastern Europe under the Molotov–Ribbentrop Pact in August 1939.
A Molotov cocktail is a breakable glass bottle containing a flammable substance such as petrol or a napalm-like mixture, with some motor oil added, and usually a source of ignition such as a burning cloth wick held in place by the bottle’s stopper. The wick is usually soaked in alcohol or kerosene, rather than petrol.
Source: WKD FINLAND.