Appreciate the feedback! I'm getting into this game again, so will re-work the guide a bit. Scalapher, sorry man.

As of the official release there are no Alchemy Recipes that use Crafting Materials (String/Ore).

Hey... That error lost me a treasure

Can confirm, modest treasure requires exceptional spirit to be upgraded.

Other than that, the only thing missing is the easiest way to mass craft weak spirits, which can be combined into exceptional spirits. My current favourite is knife + shuriken (which is knife + knife), knife + eye/paradox, knife + poison knife (knife+jitter). Knives are by far the most plentiful drop I've found, at least in the early game.

Modest Treasure needs an Exceptional Spirit to upgrade to Remarkable Spirit, or you'll lose the Modest Treasure. Other than that, this is really detailed.

Thanks Mahws. I've updated the master list and discovered a bug in my game which I've now reported. Crafting with Rare Ores (Void, Clockwork and Shroomweave), was creating additional stacks of weak spirits in my inventory and those extra stacks don't craft anything but more weak spirits. This is why my list was inaccurate :P Should be good now!

A really useful guide, but one major correction, combining weak spirits gives you strong spirits. Making weak spirits to combine up into exceptional spirits, then magic/ghost/fine wine to sell to the specific vendors that buy them at higher price is the biggest way to make money late game.