Stimufrost was a consumable material of a blue hue intended for use by sentient lifeforms. In the era of the Galactic Civil War, the powerful Imperial Lady Thalassa Tarkin commanded that stimufrost be given to every attendee of the Thirteenth Imperial Diplomatic Conclave, a meeting of important officials held on the planet called Phelarion. Leia Organa, a leader within the Rebel Alliance who was disguised as a serving girl, provided the ace pilot Shea Hublin with a dose of stimufrost at its maximum potency; however, she dispensed an excessive amount, nearly freezing his face solid.