A.T. Robertson Commentary Luke 24:41

"And while they still disbelieved for joy, and wondered, he said unto them, Have ye here anything to eat?" — Luke 24:41 (ASV)

Disbelieved for joy (απιστουντων αυτων απο της χαρας). Genitive absolute and a quite understandable attitude. They were slowly reconvinced, but it was after all too good to be true.

Anything to eat (βρωσιμον). Only here in the N.T., though an old word from βιβρωσκω, to eat.