As per request, added a "Destroy All Meat" checkbox to the first tab of the UI.
Support was already in the script for handling all resources on a per-item basis (search for RESOURCE in all caps), it just looks like nobody got around to making the UI for it. I can't blame them...it's a bit more work than I really feel like getting into myself, so I cobbled on this ugly kludge instead. (It checks for names that end in " meat" so if they add a harvested "awesome uber sword made entirely of meat" or somesuch it WILL be destroyed. Items already in your inventory or aquired by means other than harvesting are perfectly safe.)