>>5778790That would come from both how well you prepare the potion and how much you drink from it. Like the polyjuice potion, which you can just keep on drinking more to maintain the form (though I was never quite sure if barty crouch junior was normally that insane or it was an effect of consuming a highly powerful potion for a year straight. I mean, that shit has to have an effect on your sanity, right?)
>>5778761I believe that three minutes number was the in-game timer to brew it (can't expect people do actually stay stirring a virtual pot for an hour, can you). I mean, you couldn't even put all those ingredients in a cauldron that fast, never mind stir it.
> Pic related: me trying to make Rowling's mess of a magical system balanced when the main character isn't a complete fucking moron 