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Base
Fruit Juice
Acid
Booze
Invisibility
Water (Duplication)
Polymorph (Random)

Secondary
Blindness
Confusion
Cure Ailment
Restore Magic
Sickness
Speed

Final Result
Firestorm
Icestorm
Thunderstorm
Strength
Paralysis
Levitation
Healing
Extra Healing

Alchemy is the act of combining two bottles of liquid together and seeing what happens.
It requires an Alembic to get started, however you can also level up the skill before finding one by filling Empty Bottles from Faucets and Fountains, drinking any potion for the first time and throwing any potions at enemies.

Things to note:
Mixing Water with any potion will duplicate that potion with a % chance based on your current Alchemy skill. Failing the check will destroy the potion but keep the water.
Mixing Polymorph with any potion will create a random potion.
Mixing Acid in an invalid recipe will create an explosion.
Mixing Water with Acid results in Regret.
Mixing any non-base or non-secondary potion, aka any final result with anything else (except ) will always result in a Sickness.
Mixing different enhancement levels will always result in the lowest quality, meaning mixing anything with a cursed potion is usually a bad idea and mixing anything blessed with anything normal or cursed would simply be a waste unless you're really tight on space. This also applies with decanting.

Decanting is mixing two potions with the same effect into the same stack to save inventory space.
Always* start decanting with the most restoring potion in the case of , and since the resulting potions will always have the amount of the first one, letting you effectively upgrade your smaller ones.

*This only applies to same enhancement level of potions of different stacks and restore amounts, since while you can upgrade the restore amount, you can only downgrade the enhancement level.

Remember to stock up on Empty Bottles and random potions from any Potion Merchants.
Drain any Water Source you find into Empty Bottles, save said Water for potion duplication when you know what you want more of.
Proceed to yell at your allies for drinking/draining water sources in multiplayer.
Always Decant two different stacks of the same potion into one to save space.
Goatmen have a chance to receive up to 3 additional potions from fountains, be it via interacting with an Empty Bottle or by simply drinking from it.
Recycle your unwanted potions into by combining with anything else (except ).
Use said for or, useful in creating and respectively, which in turn can be used to work towards your first Extra Healing.

Surprisingly few people seem to know this, but when entering the Hamlet after defeating Baron Herx, there is a trapdoor leading up in the middle of the sewers that always contains 5 Extra Healing and 5 Restore Magic
If you've been stockpiling Water like you should have, things should be easy from here on out.
Remember to check Hamlet's potion shop and all the chests while you're there.
Don't forget to yoink the Academy's/Guild's potion-stands and drain the faucet before the portal room.
There will always be a free Alembic in the sewers with the secret merchant to kickstart any mid-game Alchemy schenanigans if you've been ignoring it until now.

To get your hands on an Extra Healing ASAP, you'll want to keep an eye out for , .

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