DINNER PREPERATION - Wine! and other drinks?
Aziraphale pulls an old tried and true Biblical trick to turn water into wine... being really discreet about what he's doing because he doesn't want people to come to him as a 24/7 liquor dispenser. If he hears enough people saying they wish they'd have something else to drink, he'll be like, "Oh look! I have some Coca-Cola! And Sprite!"