Currently, one can cook meat or morels to make a trail ration over a campfire. This is fantastic. One of the most common things I've heard is "I wish cooking was a craft skill." And really, I do too. It would be a fun flare for RP, to gather wheat, fruits, do foraging, use herbs, so on to make things like Apple pie, Bread, mashed potatoes, soup. Whether or not these things would have the same properties as a Chicken is up for discussion. Maybe the quality of food can determine how soon your character gets hungry again, because i don't think trail rations will cut it for very long, energy wise.
And I am probably going to be torn to shreds for suggesting a new crafting system. I apologize for anyone I morel-ly offend.