i am in a group were i am playing an alchemist and there is a very big rule question, it involves brew potion now my understanding is that the alchemist can brew any potion that he know a formulae for, not just from ones that he has made extracts of however the rest of the group is saying i would have to use a extract to replace the needed"spell" as per the basic crafting rules, which is it thank you in advance
so basically they are saying that i have to make an extract of whatever i am trying to make a potion for then make the potion for it?
my interpretation is the the rules on the alchemist itself say that i can make any potion that i know the formulae for, which basically is in my spell book