What are Mr. Darcy’s favourite foods? Is there any food he particularly dislikes? Does he have any odd eating habits or intolerances? How would he react to someone with very bad table manners?
His favorite drink is hot chocolate, though he would never admit to it. His favorite foods are fresh berries and bread.
He is not a fan of red meat. Chicken and turkey are agreeable, goose and duck too greasy, quail too gamey, fish too…fishy. All of which would be considered rather odd intolerances to his contemporaries.
He would excuse himself from their presence immediately unless to do so would cause great misfortune, in which case he would do his absolute best to ignore it. If it becomes intolerable enough, he may see fit to correct it.