Cooked Mutton is a Food Item that was added in Update 0.15.0.
Cooked Mutton is a food item made from cooking Raw Mutton (obtained by killing a sheep) and putting the raw mutton in a Furnace or killing a sheep while it's on fire. Each piece of cooked mutton restores 6 units of the food bar and 9.6 hunger saturation.
Cooked Mutton restores 6 hunger points and 9.6 saturation points.