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Thanks while we are at it I love this game but it simply does not tell you how to do these things unless I missed it. Is there anywhere I can look at the controls? Perhaps look at what each sign does in detail etc...?
I got the diagram or whatever for the mongoose potion well before I did this quest (since I like to explore and do all side quests prior to tackling mains) and made a ton of them and everything else on my alchemy list to lighten my inventory.
If you make a mongoose potion before the quest begins, all those materials used are actually destroyed and no mongoose potions are placed in your inventory. If you attempt to make mongoose potions when you're prompted after attempting this, it's still broken. If you tried to make mongoose potions earlier, the game simply won't allow you to make any before finishing the entire ostmurk quest line.