Sorry for a very newbie question but I can't find clarity on this as I've found two conflicting answers on this site.
I'm aiming to make a potion brewing, support character and I was looking at the Alchemist. I know about Extracts and Infusions, but for using the Brew Potion skills am I limited to only spells found on the Alchemist spell list? Could I copy something from a wizards spellbook that isn't on my Formula list and use it for Brew Potion?
If I can't I'm strongly considering a Witch or Wizard for a more flexible spell list. This campaign is expecting a lot of down time for brewing, so I would like to make the most of crafting.