Supper at Bista

I went to see Caravaggio's, Supper at Emmaus again this week. I hadn't really noticed the bread before and wanted to have a good look. A lot of scholars think it was the act of Jesus breaking the bread that identified him to the two disciples. I must say I am baffled as it doesn't look like that to me! A lot of questions remain. Jesus is depicted on the cross by numerous artists with a beard. Again on the road to Emmaus. So why does Caravaggio depict him without his beard? Why in his second picture in Milan does the artist have the inn keepers wife present? Was it an after thought or was she in the original and then get painted out? 

Apologies to Caravaggio