Honestly I’d rather just see it result in a pot of water. Let the pot hold 2 full bottles worth of water and let the player empty it into another container or drink from it.
You’d just need to change the recipe to allow for:
Water + Heat + Pot OR Pot 1/4 OR Pot 2/4 OR Pot 3/4 OR Pot 4/4
So you could use the same recipe four times using the same pot and get a full pot of water. Just may need to be some way to dissuade the player from using the pot as a container for water while moving around. Perhaps make the volume increase quite a bit more with each portion of water it holds, to represent the difficulty of carting around a pot of water without spilling it.