You remember, before you left the house going to someone’s house your mother reminded you of the etiquette rules:
“When we get over here, you better NOT embarrass me! If there is something on your plate you don’t like, don’t you go making a big scene!
You push it over to the side and eat around it. When you’re done with what you want, put your napkin over the plate and politely put it down
by your feet!”
The proper time to voice your complaints were when you got in the car or home. You could ask, “who made the potato salad?” You could pass your judgement, ‘It was warm or it was too yellow or it had no taste or the potatoes were hard’. Your mother was simply appeased you behaved while in public even through your discomfort.