"Everything we need is here on this paper. Seven bottles: three are poison; two are wine; one will get us safely through the black fire, and one will get us back through the purple."
-- Hermione Granger uncoding the Potions Riddle (PS16)
Protects the drinker from being burned by magical fire.
References from the canon
This name comes from the PS video game rather than from the original canon reference, but the potion referred to is the category of potion in (PS16) that Harry drank to pass through the black fire and Hermione drank to pass back through the purple fire. Since these potions are canon, we are including them here with the name suggested by the game.