It comes in bunches. She'll go to the Korean market and load up on food so we end up with Korean food for a fair bit of time. Then it jumps into something else. Fortunately, the Korean markets are pretty large so she picks up a lot of stuff from there for all kinds of foods.
Our 4yo daughter will devour a lot of Korean food as well which tends to promote the idea of eating more Korean food. I get burned out on it at times... or at least parts of it. They've got a lot of variety at least so I can look to other dishes to mix things up but we don't always have ingredients for them.
I envy you. Although I guess it could get old... *goes back to eating shin bowl*