This item is acquired in-game. See its sources below.
A Common Quest, item level 1, quest Item.
First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Congealing Essence uses icon file 463570, which 29 other items also use. The 4 closest by item ID:
Watery Essence ID 191473 · Quest "This small vial of liquid glitters and shines with an unnatural blue, and smells like a fresh sea breeze."Fountain of Rejuvenation ID 181275 · Quest "Allows the capture of Nuuminuuru's memory."Anglers' Water Striders ID 168416 · MiscellaneousHumming Dew ID 158810 · Miscellaneous · item level 40Blizzard numbers items as they are created, so the named items next to ID 191938 (191930 to 191944) were usually added in the same batch as Congealing Essence: the same quest line, zone, vendor or reward set.
Wakyn ID 191930 · Miscellaneous "Teaches you how to summon and dismiss this companion."
Violet Violence ID 191932 · Miscellaneous "Teaches you how to summon and dismiss this companion."
Primal Whetstone ID 191933 · Consumable · item level 73
Secretive Frogduck ID 191936 · Miscellaneous "Teaches you how to summon and dismiss this companion."
Falling Star Catcher ID 191937 · MiscellaneousPrimal Whetstone ID 191939 · Consumable · item level 70Primal Whetstone ID 191940 · Consumable · item level 75
Crystalline Mini-Monster ID 191941 · Miscellaneous "Teaches you how to summon and dismiss this companion."
Primal Weightstone ID 191943 · Consumable · item level 70Primal Weightstone ID 191944 · Consumable · item level 75The raw ItemSparse values for item 191938 in the current client build.
Read from the World of Warcraft client build files: Item, ItemSparse, Lock, Holidays, AreaTable and CollectableSourceVendor.
TheWoWDB