Stir-Fried Sweet Potato Noodles

This vegetable-heavy noodle stir-fry is a traditional janchi, or party dish for Korean celebrations and family gatherings. I like to make it for a big group of people because it does require a bit of time to make. You have to prepare each of the vegetables separately, so each is perfectly cooked, and as a result, the flavors are delicious and pure. Slinky sweet potato noodles—called dang myeon, shown—are especially springy and fun to eat, and