i don't know how far in the story you got, but eventually you should learn that there was a trial where some gods were in favor of asterion and others against. after that they created the labyrinth realm and each god left a part of their influence within, such as hestia's hearth, hades garden, and hermes "mailbox". the wine is likely something dionysius left and something that magically reappears as part of the blessing, but that's just a guess.