At Cousin Barbara's--no, in honor of our own Betty Barbara we've agreed to call the cousin Babs...At Cousin Bab's cheese-paring Christmas party she serves the Infamous Punch and a buffet spread that prompts Amelia to say, "I think I'll stay famished."
Soon after, Gideon saves the day by inventing a hospital emergency that carries them off to greener pastures.
At another party (this time given by Amelia's aunt or something) they are happy to eat more standard Brit party fare: tiny mince pies, sausage rolls, trifle, et. al.
So, the question is...What are party standards where you come from? What are the dishes that people bring out over and over (Funeral Potatoes, I'm looking at you) knowing they'll be a hit?