In a session of the Hoard of the Dragon Queen adventure, our characters were sitting down to a campsite meal provided by the chuck wagon. Being aware that they were being hunted/stalked, the cleric of the party (a dwarf for what it's worth) cast Purify Food and Drink on their meal. They were getting ready to chow down when an NPC approached and advised them not to eat. This NPC then proceeded to fish or filter (I can't recall which now) several sharp bone that would have (we were informed) been quite deleterious to our health.
The DM ruled that since bone is not poisonous, it would not be affected by the spell. I say that, RAW, by the very definition of "purify", any harmful substance would be removed.
I researched the site and found a similar sort of question in: How great is the purifying power of Purify Food and Drink?, but it didn't precisely speak to the question at hand. Our DM requested that I post the question here seeking disinterested third-party opinions.
The description of the Purify Food and Drink spell says:
All nonmagical food and drink within a 5-foot-radius sphere centered on a point of your choice within range is purified and rendered free of poison and disease.
- having had contaminants removed; cleansed.
- to make pure; free from anything that debases, pollutes, adulterates, or contaminates: to purify metals.
- to free from foreign, extraneous, or objectionable elements
: to make pure: such as
a : to clear from material defilement or imperfection
1 a (1) : unmixed with any other matter
(2) : free from dust, dirt, or taint
(NOT MIXED) to remove bad substances from something to make it pure:
(MAKE NOT MIXED) to rid something of dirty or harmful substances
Whose interpretation, RAW, holds more water? Or, more to the point, would the spell Purify Food and Drink remove physical hazards like bone shards from otherwise normal food?
Please note the school of transmutation. To transmute is to change in form, nature, or substance.