What vials can be combined with.
Vials can be combined with one of these three, depending on the vial:
Foods (Use crafted!) Drinks (Use crafted!) and Weapons
There is no list which functions on which, just use combine to sprinkle a vial onto one of these three and try to find out.
A vial will only affect a single food/drink container.
The game also finds it under: enchanting_vials, enchanting vials.
Dark Legacy