When one makes kiddish, does one actually have to drink from the kiddush cup or can one pour into another cup after the bracha and then drink from a different cup?
Also, if one has leftover kiddush wine in the above case can they pour the wine back into the wine bottle because no one actually drank from the cup, or is this also pagum wine?
It is permitted to pour the wine into a different cup, and drink from it (one should pour a quantity of a revi’is in to the other cup, and drink a melo lugmav). Leftover wine that has not been directly drunk from is not pagum (blemished) — only the wine that is directly drunk from is blemished — and may be returned to the bottle. Some raise an issue of tevilas keilim over returning wine to a bottle.