 You see, the custom was for the host to dip a bit of mutton into the sauce and then give it to the person to his left who was the honored guest. And in this case, it was Judas. When Jesus gave it to him, he was in effect saying, Judas, do you really want to go through with this? This is your last opportunity to back out of your deal. I'm honoring you. I'm giving you a sense of acceptance with the disciples.