The ingredient Frost Salts is collected from dead Frost Atronachs.
Three samples of Frost Salts are necessary to activate the Atronach Altar in the Wizard's Tower official plug-in, if you wish to use the altar to summon a permanent Frost Atronach companion. (Fire Salts or Void Salts will instead provide a Flame Atronach or Storm Atronach, respectively).
9 guaranteed samples can be found in the following locations (magenta crosses on map):
- 1 sample is in the Leyawiin Mages Guild 2nd Floor West
- 1 sample is in Honmund's House in Bruma
- 1 sample is in Brotch Calus' House in Bruma
- 2 samples are in the upper floor of the Arcane University's Praxographical Center
- 1 sample is in the Lustratorium of the Arcane University
- 1 sample is in the cellar of the West Weald Inn in Skingrad
- 1 sample is in All Things Alchemical in Skingrad
- 1 sample is in the basement of the Mystic Emporium in Market District
It can also be found randomly in the inventories of alchemy vendors (starting at level 9) and in some Monster loot chests (starting at level 13).
Standard Frost Atronachs (not summoned ones) and the Frostfire Atronach Glade Guardian are the only sources of this ingredient. Frost Atronachs are the least common variety of Daedra: they are not normally encountered in the Planes of Oblivion. In Oblivion, there are only 3 places where the boss-level daedra will be a Frost Atronach (and only at level 15); there are 16 other places where a Frost Atronach will appear but only at level 13.
Therefore, the best place to look for Frost Atronachs is in Conjurer Dungeons (circles on map), where the standard daedra that appear may be Frost Atronachs at levels 15 and higher.
Before level 15, the only places where creatures bearing Frost Salts can be found are:
- The Frostfire Atronach Glade Guardian in Frostfire Glade (red square; part of the Tears of the Savior quest) is the only guaranteed source of Frost Salts at all levels. It is only a single creature and a sample of Refined Frost Salts must be used to access the location. However, it does respawn.
- During the quest The Battle for Castle Kvatch, the 19 daedra that appear in the town have an 18-25% chance of being Frost Atronachs at levels 14-22.
- The Eternal Gardens in Mankar Camoran's Paradise (during the quest Paradise) contain 8-14 daedra who each have a 30-38% chance of being a Frost Atronach at levels 10 and higher.
- In Fort Teleman (purple circle), a single respawning boss level daedra is guaranteed to be a Frost Atronach at level 13. Up to 8 are possible at levels 15 and higher.