You can't brew the potions yourself.
You can only make them by using a potion maker's service in the Mages Guild or one of the Temples. You need to be a guild member to be able to do this.
Mmm... are you sure the Mages offer potion
making? (I apologize if my memory is fuzzy on this since it's been about
10 years since) I coulda swore it was just Temples / DB... maybe I'm wrong though. :shrug:
chaosapiant: Most temples offer the service around membership level
. Give Arkay a try if you would like potion making a level earlier and want a well rounded temple focused on healing. (Some temples do not offer potion making. Talk to people and explore the temple's services before joining.
You can only join one!)
And apart from finding a recipe or a ton of trial and error, there is no way to know what any particular mixture will produce. Better to just buy potions instead of brewing them.
^ Haha, I feel ya on that... I wouldn't discourage against brewing if you have a hard-copy of recipes though.
Potion Formulae (for printing) :read: http://uesp.net/wiki/Daggerfall%3a%50otions
* Recommend against reading too many things on UESP if you want the fun of finding out first-hand in-game.
(best way)Some things are just a joke though, like finding the formulae of many potions via written recipe in-game; ridiculously
too rare.