serve around
To provide to or place before various people some kind of food or drink. A noun or pronoun can be used between "serve" and "around." Would you mind serving the tea around, Tom? We'll be serving around hors d'oeuvres in a little while, everyone.
serve something around
to distribute something to eat or drink to everyone present. Please serve the snacks around so that everyone gets some. Serve around the birthday cakes, would you?