Miamisu
I haven't dumpster dived in a while. I gave it a shot several minutes ago and got a Philosopher's Cache, which ended up being...an Amethyst? I'm lost because I don't use Alchemy.
So I just picked a random item.
sweatdrop
The Philosopher's Cache is a chance item, in that when you open it you randomly receive 1 of 10 colored cache's, or, on rare instances, a Heart Charm for GoFusion.
The color caches all contain specific alchemy components that you can then manually choose from. Different recipes require different ingredients, and in different quantities.
Here's a post I made a while ago that might help explain things a bit better.