OK, so there's a spell compendium, figured it would be a good idea to start one for potions/bombs.
obviously no need for single ingredient recipes, so will start with the ones that take 2 ingredients:
requires alchemy 5:
-willpower (Permanent +1 increase to willpower): Crystal Flower + Etherweed
-strength (perm. +1 strength): Crystal Flower + Blooddrop Cap
-vitality (perm. +1 vitality): Crystal Flower + Mudwort
-dexterity (perm. +1 dexterity): crystal flower + Falconskrye
not sure of alchemy require (less than 5 anyway; probably 2 or 4):
-antivenom (cures poison/ or poison resist?): blooddrop cap + mudwort (level 2)
-antidote (cures disease) etherweed + mudwort (level 2)
-potion of bear form (yes, it turns you into a bear! - very good if you find your front line down and you need some heavy melee): mudwort +falconskrye (level 4?)
-shield (like the mage spell; boosts your armor rating by quite a lot): mudwort + etherweed (level 2)
-rage (like the mino ability, but at will!): booddrop cap + falconskrye (requires alchemy 4)
I have yet to figure out any pots that take more than two ingredients, nor what the recipes for bombs are. Feel free to add them.