* If you'd prefer, you can buy kimchi at most Asian grocery stores or healthy food stores.
* Napa cabbage, gochugaru, and gochujang can be found at Asian markets. However, you may substitute green cabbage, red pepper flakes (use ⅛ cup), and sriracha accordingly.
* For a vegetarian option, try substituting firm tofu for the beef.
*I recommend using corn tortillas (I prefer its taste), however they tend to be more fragile than the flour version. That's why it's important to warm them before use.