Questionable blend of chemicals and water.
The item id for Bottled Energy in unturned is 93. 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: 1
Size_Y: 1
Size_Z: 0.4
Water: 55
Energy: 75
Blueprints: 1
Blueprint_0_Type: Repair
Blueprint_0_Supply_0_ID: 392
Blueprint_0_Supply_0_Amount: 1
Blueprint_0_Build: 27
ConsumeAudioClip: Sounds/DrinkSwallow.mp3