Hi! I have a really good idea for a plugin that hasn't been done yet. You would be able to create a custom potion in the config, choosing the effect and it would display it in the lore ect, it could use currently un-used potions ingame, or something. For example, 373:8390 (Potion of Swiftness II (extended)) is not used ingame and is unbrewable, is a whiteish colour potion and could be named "Vodka" with the lore "Nausea (0:05)" or something, but you would need some code to over-write the effect lore, I hope this is possible in some way! Thanks
Or you can use a texture pack, make rotten flesh look like a vodka bottle, and use essentials give rotten flesh a lore or renaming?