I am Chinese but grew up in the USA. I learned the western food etiquettes as a kid from being around Americans most of my life. There is a new Chinese guy at work. Really great kid, straight out of school and having never been around Americans much, he tended to congregate around other Chinese grad students while in school.
The problem is this: his eating habits are perfectly normal for China but it is really offensive for the USA. He chews with his mouth open, he slurps all of his foods loudly, not just the soups, he chews energetically and quite loudly, and he holds conversations while chewing and spitting his food all around, he has a hard time eating messy foods from a plate, he will slink down on his seat and shovel food into his mouth with the fork from the edge of the plate. I am used to it from having spent some time in China, but I think this is really going to hurt him in the corporate world here. I don't want to hurt his feelings, but I also don't want him to hinder his future because others find his eating etiquette lacking. I have spoken to some of his co-workers about it, they pretty much have a hard time going out to eat with him because it is so distracting.
What can I do?