Draco gaped at her.  She opened up her own essay, continuing on like she hadn’t just revealed a highly coveted piece of information about one of the biggest Potions breakthroughs in the last fifteen years.  He wished he could say it was surprising that she knew this.  On some level it was.  On another, it wasn’t.  She was the Brightest Witch of Her Age for a reason.  It would be hazardous to Draco’s health to forget that.