Helga cannot teach him about the black powder Muggles use to make fireworks. That is beyond her knowledge. "You can do a great many things, Rake, if you only try. And you must try." It is one thing to not be good at one thing, is quite another to think oneself not good without having tried.

She collect some of the fungus. Helga carefully plucks them and places them in her basket, a basket that is not worried about overfilling. "What interests you, Rake?"