Pork pies are fantastic. They are a meal in a wheel and have sustained me through many a session.

The ones with lots of jelly are the best. The jelly lubricates the old vocal chords and I've even seen a veteran fiddle player rub the jelly into his battered old fiddle to increase the lustre and bring out the patina of the wood. Marvelous stuff in pork pies!

I can't understand why said person should object to the presence of pork pies and branston pickle and HP sauce etc unless it is on the grounds of the horrific mess it all makes.
I presume,New bould, that you maintain an orderly eating environment and clean up after yourselves.
But if not it can be a disaster zone and you can find bits of pork pie attached to musical instruments, cases, song books and plectrums etc etc many weeks later.
I would call his bluff if I was you and you will probably find that it was all a 'porky pie' anyway and he has no intention of leaving!