Currently fulsome distillation breaks in the midgame. It's a shame, because ogre bands can be turned into stacks of potions of degeneration - but only for players who are willing to wait for corpses to rot. In the interest of catering to impatient players, I propose the following change: if a corpse is large enough, fulsome distillation extracts a low-tier potion (confusion,poison) and *rots the corpse* rather than turning it into a skeleton. That way, an ogre gives a potion of poison followed by a potion of degeneration (when fulsome is used on the resulting rotted corpse), a spiny frog gives a potion of poison followed by a potion of strong poison, and so on.
That's actually very cool.
FD is currently getting modified.
Fulsome no longer depends on rottenness in trunk, making this FR moot.