Aqua Vitae
No known way to obtain it. The game's data has no way to get it.
The Aqua Vitae is only used by recipes that no workbench offers, and nothing in the game files produces it.
It appears in old recipes from before alchemy worked by runes, for the Healing and Energy potions. Healing Potions are made by alchemy instead; Energy Potions cannot be made at all.