10-Minute Beef & Onion Noodles

One technique video, one five-cent secret: half a teaspoon of baking soda turns any cut of beef chopstick-tender before it ever meets the pan. The slices rest 15 minutes in soda water, get rinsed clean, then take a glossy marinade of mirin, soy, unagi sauce and a cornstarch coat that seals the juices in. From there it’s a 10-minute sprint — beef searing loud in one pan while two noodle cakes boil beside it, onion half-moons and green onion lengths keeping their bite, oyster sauce and dark soy glazing every strand. The beef from Chinese takeout that never works at home — this is it working.