Passive Aggression.

A very common manipulation among those who try to hide their true aggression but express it in a passive manner instead. It may look like sarcasm, but sarcasm does not imply humiliating others. "The dinner was really delicious, but I see there is no salt in this house." And sometimes, people using passive aggression, don't even notice obvious harm. So my advice would be either not to react to such things at all, or to respond in the same manner. "Salt is only for welcome guests in this house."