80 Food 90 Water
The item id for Frost MRE in unturned is 36418. 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
Quality_Min: 50
Quality_Max: 100
Food: 80
Water: 90
ConsumeAudioClip: core.masterbundle:Sounds/EatCrunchy.mp3
Blueprints: 1
Blueprint_0_Type: Repair
Blueprint_0_Supply_0_ID: 36360
Blueprint_0_Supply_0_Amount: 1
Blueprint_0_Build: 27