Rather smelly and fishy.
The item id for Squid Cooked in unturned is 1435. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Useable: Consumeable
Size_X: 2
Size_Y: 2
Size_Z: 0.35
Food: 50
Blueprints: 1
Blueprint_0_Type: Supply
Blueprint_0_Supply_0_ID: 1434
Blueprint_0_Supply_0_Amount: 1
Blueprint_0_Level: 1
Blueprint_0_Skill: Cook
Blueprint_0_Build: 27
ConsumeAudioClip: Sounds/EatCrunchy.mp3