Hermione looked at the vial in her hands and couldn’t keep the smile from spreading across her face. Talking through her list of people the other night, he had come up with an idea for Petunia Dursley, the horse-faced bitch. It was a relatively simple potion Draco had brewed for her. Drink it once, and all the calories you consume for the next six months are stored as fat. No amount of physical exertion would make you lose weight. It was a nutrition potion for people living through a famine. In fact, Hermione had taken a modified version of the potion right after the war. She had been so malnourished after the year on the run, she desperately needed to gain weight. The potion she consumed, unlike the one she would give Petunia made sure she never went over her ideal body weight.