Harry's mouth fell open. The dishes in front of him were now piled with food. He had never seen so many things he liked to eat on one table: roast beef, roast chicken, pork chops and lamb chops, sausages, bacon and steak, boiled potatoes, roast potatoes, fries, Yorkshire pudding, peas, carrots, gravy, ketchup, and, for some strange reason, peppermint humbugs.
The Dursleys had never exactly starved Harry, but he'd never been allowed to eat as much as he liked. Dudley had always taken anything that Harry really wanted, even if It made him sick. Harry piled his plate with a bit of everything except the peppermints and began to eat. It was all delicious.
-- Harry Potter and the Sorcerer's Stone by JK Rowling.
I don’t get from what reason Harry excluded peppermints. Is it just a dessert that has to be picked up after his meal? Or is there any other reason?