3 oz. bean threads (cellophane noodles) or thin rice noodles
1/4 cup canola or peanut oil
3 Tbs. soy sauce
1-1/2 Tbs. Asian sesame oil
1-1/2 Tbs. rice vinegar
1 Tbs. light brown sugar
1/2 lb. flank steak
Kosher salt
1 small zucchini (about 6 oz.), halved and thinly sliced crosswise into half circles
1 cup matchstick-cut or grated carrot (1 large carrot)
1 small yellow onion, halved and thinly sliced crosswise into half circles
1 Tbs. toasted sesame seeds

Tip:
Traditionally, the noodles for this Korean favorite are made of sweet-potato starch, though bean threads or thin rice noodles are also fine.