Do you know sunchokes? No? And have you ever heard of Jerusalem artichokes? It’s the same root vegetable and it’s also called topinambour, earth apple, sunroot or earth pear (in Dutch it’s called earth pear or topinambour).
They look a little like bloathed ginger roots but they are actually the edible roots of a North American sunflower plant.
I really like this explanation of where the name ‘Jerusalem Artichoke’ came from