There are already bug threads about this.
One thread:
http://www.project1999.com/forums/sh...ad.php?t=39372
Another thread:
http://www.project1999.com/forums/showthread.php?t=5509
A good link:
http://web.archive.org/web/200010112...ing/food.shtml
Food duration has no meaning in Classic. You're wasting money on the high-end foods/drinks.
Food consumption rate is also affected by what zone you are in. For example, Kunark makes you hungrier.