I am thinking of a mod idea (I have no modding skills) that makes food go bad after a few days (a week after you picked it up?). Once they are rotten, those ingredients yield different alchemy effects (mostly poisonous).
For e.g.:
When good, meat has certain (good) properties as allotted by COBL ingredients
After a few days, your character gets a notification (in the upper right corner of the screen, no message box popup) that something is starting to stink...
After a week passes by, the ingredient properties change to more poisonous attributes similar those allotted by http://www.tesnexus.com/downloads/file.php?id=5065 (or similar).
Not all food should go bad - meat is especially susceptible to spoiling, but plant ingredients can stay longer...
What do you think? Anyone up for it? Maybe this should be integrated into COBL or one of the hunger/Thirst mods.
Also, Q's More and Moldy should also be integrated into COBL...