IIRC, the Molotov Breadbasket was used to refer to Soviet RRAB (Rotativno-Rasseivajuschtschaja Aviabomba) bombs, which spun to disperse incendiary bomblets over the immediate area where they fell. The bombs were used by the Soviets during the Winter War of 1939-40 between the USSR and Finland. The nickname stuck when the Soviet foreign minister, Vyacheslav M. Molotov, denied reports of the attacks on Finland, and claimed that the Soviet Air Force was dropping breadbaskets instead of bombs.
Almost inevitably, the guerrilla resistance fighters and regular Finnish soldiers started using the term 'Molotov Cocktail' to describe incendiary bottle bombs, in additional honor of that claim.
This writeup is based on information from the Battles of the Winter War website, provided at these URLs: