Blanch brussels sprouts in a large pot ofboiling salted water until bright green,about 15 seconds.
Drain and set aside.
Heat oil in a wok or large skillet overmedium heat.
Add garlic and stir until lightgolden brown, about 30 seconds. Usinga slotted spoon, transfer to a small bowl.
Increase heat to high; add brusselssprouts. Stir-fry until they begin to soften,2-3 minutes.
Add oyster sauce and next5 ingredients. Stir-fry for 30 seconds; addchicken broth. Bring to a boil; cook untilliquid is reduced slightly, about 2 minutes;add more chiles, if desired. Stir in garlic.