UO Second Age

"Potions can be crafted directly in the keg if there are no bottles in the alchemist's backpack."

I saw this and figured i would ask about it since it would save me a lot of time during crafting is this possible if so how ? If not why was it changed :/?
http://wiki.uosecondage.com/Potion_Kegs ... Potion_keg
"Potions can be crafted directly in the keg if there are no bottles in the alchemist's backpack."

I think that's false, you can macro it with one bottle though and it's pretty easy to do.