Complex sentence: Sliced "kimchi" is put into a pot with beef, pork or seafood, tofu, sliced spring onions, and garlic, and are all boiled with water or "myeolchi" (anchovy) stock.
Split into simpler sentences: Sliced "kimchi" is put into a pot with beef, pork, or seafood; tofu; sliced spring onions; and garlic. They are boiled with water or "myeolchi" (anchovy) stock.