When this slave cooked some bad food, this mistress could not eat it. The little he ate made her puke. That is not the reaction she expects when eating food especially at her house and one that she has bought with her money. She had to punish her slave to make him learn to cook good food. She took the vomit and made him drink all of it and swallow.
This slave endured it like a man. She shit on him and then puked on him. He sat there and took it all without a fuss and even the mistress was impressed and let him go