"Should I have?" he replies, his smile faltering a bit when he notices the sound of clear disbelief in Kieren's tone. "I haven't a clue what my mother did with the food when we were done. I always assumed it was either thrown out or the-- or it was otherwise disposed of," he says, quickly catching himself before mentioning Kreacher, still too aware of the sensitivity in that particular subject. "And it was the same at Hogwarts. I've certainly never attempted to simply heat up food that's already been cooked. That does sound terribly unappetizing. You're certain it's sanitary?"