They were still unfamiliar terms, but Harry knew 'mortals' well enough to assume Tsourai probably meant fae. He nodded a little and ate another bite before responding and pointed at himself.

"Mortal." He pointed at one of their ethereal captors, "Fae. Tsourai? Never heard o'streams or flats, but I live on th'Isle, across from Auradon. Tha's th'mainland. Hatter'n Hare live in Wonderland, but they closed tha off ages ago. No one in an no one oot. Where're ye from then pretty? I'd remember seein ye."