Make a character consume a non-food item

[ThirteenDoctors]

I am a new modder and I would like to create a character that can consume nightmare fuel. Instead of raising his hunger though, I would like it to raise his sanity

[rawii22]

There's a guide here that might help do what you want. He mentions something about making food items inedible, but there's something to learned about food there that can help with making something edible. You'll have to give nightmarefuel the edible component and make sure that only your character can eat it. This is done by altering the CanEat function in the eater component. Food values are also mentioned here.