A Molotov cocktail , also known as a petrol bomb , benzine torch , molotov grenade or a Molotov bomb , is the generic name for different kinds of simple incendiary weapons . The Molotov cocktail , also known as the petrol bomb , gasoline bomb , Molotov bomb , fire bottle , fire bomb , or simply Molotov , is a generic name used for a variety of improvised incendiary weapons .