Unstable Greater Steelforged Essence

Unstable Greater Steelforged Essences are what remains of Greater Steelforged Essences, which can no longer be crafted. Prior to Shadowlands, using this item "restored" it into a Steelforged Essence and 25 Sorcerous Fire.

Source
The original version of this item, Greater Steelforged Essence, was crafted by blacksmiths with a skill level of 1. The recipe was learned from Recipe: Greater Steelforged Essence, which could be purchased from The Forge at Lunarfall or Frostwall, or from the blacksmithing vendor in Stormshield or Warspear.

Required tools:
 * Anvil, Blacksmith Hammer