Added onion, beef, and sweet potato to leftover Dakbokkeumtang sauce.
Cut the beef, potato, carrot, and onion into bite-sized pieces.
Season the beef with salt and pepper.
Heat oil in a pan, stir-fry the beef until just browned, then remove from the pan.
In the same pan, stir-fry the potato, carrot, and onion.
Add the beef back into the pan and pour in the Dakbokkeumtang sauce.
Add water and bring to a boil.
Simmer over medium heat until the ingredients are cooked through.
Add green onion and Cheongyang chili pepper to taste, and boil for a short while.