Destroy organic items is a spell solely usable while the Mephitic spellbook is open. This spell can only be cast on items with organic properties, eg, fish, herbs, food, etc. When the spell is cast, which will function similarly to alchemy wherein the spell will flip to the inventory for an item to be selected, the option screen for how many items you would like to destroy will come up (similar to when cooking), the options are 1, 5, 10 or X. When an item is destroyed with this spell, there is no way to get it back, nor will you get any remains, it will simply disappear from your inventory.