This is the problem with jargon, whether it's that of TV chefs or newspaper journalists. As Exhibit A, we submit the following Harry Potter caption:
Actor Daniel Radcliffe attends the after party following the European premiere of "Harry Potter And The Order Of The Phoenix" at the Old Billingsgate Market on Tuesday in London, England.
Oh, he went to the after-party after the movie premiere, as opposed to the one before. It's all clear to me now.
After-party is now on the list of laughable Hollywood jargon. Avoid it!