This is a Minetweaker/Craftweaker & modtweaker script that allows you to use Thaumcraft 4's crucible to create potions instead of the vanilla minecraft method. It doesn't replace brewing stands so you can still use them to make potions.
A list of the aspect requirements for each potion modifier
Water Bottle: Aqua 4
Awkward: Permutatio 2
Thick: Lux 2
Mudane: Potentia 2
Splash modifier: perditio 2
Potency modifier: lux 2
Extended modifier: Potentia 2
Speed: motus 2
Slowness: Vinculum 2
Strength: Telum 2
Weakness: Telum 2, Perditio 2
Instant Health: Victus 2
Instant Damage: Mortuus 2
Regeneration: Sano 2
Poison: Veneum 2
Fire Resistance: Ignis 2, Tutamen 2
Invisibility: Sensus 2, Pannus 2
Night Vision: Sensus 2, Lux 2
Water Breathing: Aer 2, Aqua 2
I would like to add more potion recipes but as it sits right now I don't know how to add custom potions. Until then or until I find some other work around I can only add already existing potions.
It's in it's initial release so there's not much thought put into balancing right now. If anyone has suggestions I'll rebalance the aspects to not be over or underpowered recipes.
(EDIT) I have slightly rebalanced the potions to be a little more expensive to craft considering some potions, without editing the aspect ratios can give back more aspects than went into it.