Solution 078 was most likely an experimental mix. It was in all probability produced by a sixth year student during a Potions class, being that Horace Slughorn kept it in his classroom during the sixth years' class. 
- Harry Potter and the Half-Blood Prince (film) (First appearance)
Notes and referencesEdit
- ↑ Harry Potter and the Half-Blood Prince - Behind the Magic (ITV's Movie Special).