Found at the beginning of the game in the Cemetery of Ash, on a corpse lying on the remains of the central fountain. After this point, the Ashen Estus Flask will restore its allotted charges whenever the player rests at a bonfire.
When used, the Ashen Estus Flask restores a set amount of lost FP. Similarly to the normal Estus Flask, attempting to use the Ashen Estus Flask when it is out of charges will cause the player to fail to drink from it, effectively rendering them defenseless for the duration of the animation.
The player can talk to Blacksmith Andre to allott their Estus charges to either the Ashen or normal Estus Flask. Additional charges can be gotten by giving Estus Shards to Andre, while the amount of FP/HP restored can be increased by burning Undead Bone Shards in the Firelink Shrine bonfire.
The amount of FP restored per use is detailed in the following table:
|Bonfire level||Ashen Estus Flask level||FP restored||Difference from last level|