Here is some feedback after I have tested and verified all the potion recipes:

Originally Posted by Angry Dave

>>>>> Potions <<<<<
[*1][CR 1] Empty Potion Bottles | Fire Resistance Potion + Water Resistance Potion
[*1][CR 1] Empty Potion Bottles | Air Resistance Potion + Earth Resistance Potion
[CR 1] Potion (Small Healing) | Empty Potion Bottle + Penny Bun Mushroom
[CR 2] Potion (Medium Healing) | Small healing potion + Small healing potion
[CR 3] Potion (Large Healing) | Small healing potion + Small healing potion
[CR 2] Potion (Magical Armour) | Empty Potion Bottle + Whisperwood
[CR 1] Potion (Poison) | Empty Potion Bottle + Fly Agaric Mushroom
[CR 0] Potion (Poison) | Empty Potion Bottle + Ooze Barrel
[CR 1] Potion (Poison) | Empty Potion Bottle + Rotten Eggs
[CR 1] Potion (Poison Resistance) | Empty Potion Bottle + Drudanae Plant
[CR 3] Potion (Poison Antidote) | Health Potion + Apple
[CR 2] Potion (Speed) | Empty Potion Bottle + Fanny Blossom
[CR 2] Potion (Sm: CON) | Empty Potion Bottle + Farhangite
[CR 5] Potion (STR) | Minor Constitution Potion + Bone Dust
[CR 5] Potion (DEX) | Speed Potion + Sinew
[CR 5] Potion (INT) | Minor Perception Potion + Void Essence [Remove this as it is not true. It works without a recipe book](May required the recipe book to craft: unconfirmed)

[Remove the entire formula. It does not work][CR 5] Potion (CON) | Empty Potion Bottle + Bone Dust (May required the recipe book to craft: unconfirmed)

[Remove the entire formula. This formula gives an invisibility potion, which is listed later in the list. No need for a duplicate] [CR 5] Potion (SPD) | Empty Potion Bottle + Void Essence (May required the recipe book to craft: unconfirmed)

[CR 5] Potion (PER) | Empty Potion Bottle + Eye [Remove this as it is not true. It works without a recipe book](May required the recipe book to craft: unconfirmed)

[CR 2] Potion (Water Resistance) | Bluegill + Empty Potion Bottle
[CR 2] Potion (Air Resistance) | Jellyroom + Empty Potion Bottle
[CR 2] Potion (Fire Resistance) | Guepinia + Empty Potion Bottle
[*1][CR 2] Potion (Earth Resistance) | Earth Tongue Mushroom + Empty Potion Bottle
[*1][CR 3] Potion (Minor Resist All) | Fire Resistance Potion + Earth Resistance Potion
[CR 3] Potion (Minor Resist All) | Air Resistance Potion + Water Resistance Potion
[CR 2] Potion (Debuff STR) | Poison Potion + Tooth
[CR 2] Potion (Debuff DEX) | Poison Potion + Sinew
[CR 2] Potion (Debuff INT) | Poison Potion + Tormented Soul
[CR 2] Potion (Debuff CON) | Poison Potion + Bone Dust
[CR 2] Potion (Debuff SPD) | Poison Potion + Void Essence
[CR 2] Potion (Debuff PER) | Poison Potion + Eye
[CR 3] Potion (Debuff All) | Any Debuff Potion + Any Debuff Potion
[CR 4] Potion (Minor Invisible)[*2] | Air resistance Potion + Armour Potion
[CR 4] Potion (Invisible)[*2] | Empty Potion Bottle + Void Essence
[CR 3] Potion (Telekinesis) | Minor Resist All + Drudanae Plant
[CR 3] Potion level up | Augmentor + Any Potion (Small to Medium to Large) [*3]
[CR 0] Filter of the Fearless Imp | Apple + Pumpkin


[*1]: Both potions must have resistance strength of +15%. I tested with resistance strength +30% potions and that did not work.
[*2]: Both potions are called "Invisibility Potion". Both potions are minor potions.
[*3]: It does not work with debuff potions.