"Come on, I’m hungry," he tapped the poster in Ron’s hand with his wand, and said: "Incendio!" Ron let out a little yelp of shock, and Hermione leant back in alarm when the parchment went up in flames in Ron’s hands, "There you go, problem solved - now come on!" Hermione eyed the ashes on the carpet reproachfully, but apparently had nothing to say against his methods, following him to the portrait hole. 