Step 1 of 4

Mix the sauce and line everything up

Stir the soy, vinegar, sugar, cornstarch and sesame oil together with 4 tablespoons of water until the cornstarch has dissolved. Cut every vegetable and set them out in the order they will go into the pan.

— Once the wok is hot there is no time to chop anything. Every stir fry that goes wrong goes wrong here, before the heat is even on.