Epitaph Online has a hunger system. This means you periodically must eat food to survive (or at least not get some nasty penalties.)
There is a good variety of food, and some of it provides additional effects, such as [energy] or [resolve] boosts.
Some food goes bad over time. Eating partially rotten food may lead to [nausea] which will cause you to vomit repetitively increasing thirst and hunger.