Well it's possible to make sopmething that has a syndrome now... it is not, however, possible to cure a syndrome or to make an anti-syndrome.
If it were possible, it would be very difficult to create the correct antitoxin for whatever ails your Dwarf at the time, however. So it still wouldn't work quite like you want it to. Better for doctors to treat the symptoms of what ails you, since they couldn't possibly find the cure in time.
It sounds awesome but it's impossible.
So yeah, ash.
[REACTION:CREMATE_REMAINS_KILN]
[NAME:cremate vermin remains]
[BUILDING:KILN:CUSTOM_SHIFT_V]
[REAGENT:A:1:REMAINS:NONE:NONE:NONE]
[PRODUCT:60:1:BAR:NONE:ASH:NONE]
[PRODUCT_DIMENSION:150]
[SKILL:SMELT]
I think it should be furnace operating.
Anyways, couldn't you change it so instead of ash, you get gold/candy?
Yeah I feel like it has the most similarities to [SKILL:WOODBURNING]
Anyways we've been over this. Yes, you could take that PRODUCT tag and replace it with just about anything. But anything with any kind of value would be completely unbalanced and unfair. Uncountable vermin corpses, turned into anything valuable, would be a game breaker. In other words, if you're creating gold from basically nothing, just create gold from nothing and recognize it's a cheat. No need to try and give it the appearance of legitimacy from having a super-abundant reagent.