Take out a large frying pan or flat-bottom wok for the stew, a small pot for boiling the noodles, and (if using) a small frying pan for the dumplings.
Start bringing a small pot of lightly salted water to a boil.
As you follow the next steps, once the water boils, put the noodles in. Cook them a minute or two short of the package instructions, drain, and set aside.
Heat up some oil in a large frying pan or flat-bottom wok.
Add the onions and sauté until translucent.
Add the broth and stir in the sauce. Let it come to a boil, then reduce to medium high heat.
Add the rice cakes. (Make sure they are cooked in the stew for at least 5 minutes.)
Add the cabbage and fish cakes and let it cook for a few minutes.