Soak broccoli florets in salted water for 15 minutes.
Meanwhile, peel and finely dice the ginger.
Prepare the sauce by mixing all the ingredients.
Drain the broccoli, rinsing them a few times, drain and pat dry with paper towels.
Heat oil in a wok to medium heat.
Add ginger and stir fry until fragrant.
Turn heat to high, add broccoli and stir fry for 1 minute.
Add water, stir, cover, and cook for 1 minute.
Add salt and continue stir-frying for 1 minute.
Add sauce in 3 stages, stir well in between.