Needed:
-consumable (drink or food).
-random item.

Drop the random item on the floor, start eating the consumable. While eating, swap the floor item and the consumable. You will get the random item in your inventory, the consumable is now on the floor. With this, you use the food and you also get its benefits but it creates the same item -totally functional- on the floor. If you repeat the process, you will get energized and hydrated with only one consumable.