While in battle (playing with the relay browser), during a combat if you type in "eat something" into the CLI, it will decrement the item from inventory even though you are not actually eating it.
example:
> inv brain
crappy brain (15)
decent brain (30)
good brain (8)
> eat decent brain
Eating 1 decent brain...
Finished eating 1 decent brain.
> inv brain
crappy brain (15)
decent brain (29)
good brain (8)
example:
> inv brain
crappy brain (15)
decent brain (30)
good brain (8)
> eat decent brain
Eating 1 decent brain...
Finished eating 1 decent brain.
> inv brain
crappy brain (15)
decent brain (29)
good brain (8)