Albert Barnes Commentary John 21:9

"So when they got out upon the land, they see a fire of coals there, and fish laid thereon, and bread." — John 21:9 (ASV)

They saw a fire, etc. We have no knowledge from where this was produced—whether it was, as Grotius supposes, by a miracle, or whether it was a place occupied by other fishermen, where they also might cook the fish which they had caught. As no miracle is mentioned, however, there is no reason for supposing that any existed in the case.