A Frosted Doughnut is a non-perishable food item.
Frosted Doughnuts can be eaten, providing the player with some positive effects, including reducing unhappiness.
Frosted Doughnuts can be found in bakery display counters.
From items.txt (Project Zomboid directory/media/scripts/)
Type = Food,
DisplayName = Frosted Doughnut,
Icon = DoughnutFrosted,
Weight = 0.1,
HungerChange = -7,
UnhappyChange = -15,
Carbohydrates = 35,
Proteins = 3,
Lipids = 15,
Calories = 180,
WorldStaticModel = Doughnut_Frosted_Ground,