Ok I started really late as a 52 warlock having 280 engineering and mining dropped it to do herb/alchemy.
Herbalism is already maxed getting there with potion making.
Researching the forums for recipes and trade skills there seems to be a descrepency.
Potion making can be trained to 300 max.
There is no quests listed for alchemy other then the lowbie one in darnassus.
Recipes for flasks and the alchemist stone, listed at unlearnable until skill varies 305-315?
So then, how is it possible, something has to be missing here.