Is food edible?
Edible means - fit to be eaten.
The edibility of food is dependent on such things as: how it was cooked, freshness, etc.
"Edible" can be used as an adjective OR as a noun in a sentence. When used as an adjective, "edible" is defined as something that is fit to be eaten; esculent, eatable. I am not convinced that that is edible road kill. (Adjective usage) When used as a noun, "edible" is defined as an edible substances; food. Rice and broccoli are edibles. ([Plural] noun usage)