A vital, yet irrelevant item used most commonly in one's search for the Holy Grail. It is said to be the size of a grown man's torso, and the colour of your average caucasian person.
It was originally written into the script of 'Indiana Jones and The Last Crusade', but was then later taken out as Harrison Ford was jealous of how awesome the Steffan was.
Medieval English transcripts state that only 3 Steffans exist, with each representing one of the three differant states atoms can exist in. (Solid, liquid and gas)
Some 1980 "crazies" suggest there is a fourth Steffan existing somewhere, that represents the arguably, "iffy" atomic state, Plasma, like that of fire, which is neither gas, liquid or solid.
Both the liquid and gas Steffans are said to be somewhere in Europe, where the location of the "Solid" Steffan is unkown, but rumoured to be either in South-East Asia, or in the Laurentian Abyss, in the Atlantic ocean, the deepest place on the planet.
It is still uncertain how each of these Steffans aid in ones hunt for the Cup of Christ, but as stated in Greek scrolls from the 7th Century "The power of just one Steffan is, no doubt, enough to move mountains, or complete "HARD" rated Su Do Ku puzzles."
And translated from Ancient Jordanian hieroglyphs (50 AD) "To possess a Steffan would benefit us greatly in knowing the secrets of God. In a way, Steffan is God."
Indiana Jones: "Dad, its Indiana, my name is Indiana."
Jamie: "Yeah! He's such a Steffan!"