How would culture will affect someone's eating habits?

Americans hold the fork in the left hand to cut meat, but transfer it to the right hand to pick it up. Europeans think that is bonkers.

Middle eastern cultures consider it good manners to belch and fart while eating. That is their way of complementing the cook.

Japanese have elaborate customs, something about admiring the beauty of the bowls before drinking the contents. There are places that charge $200 for a cup of coffee because of the ritual involved.