In a large deep metal skillet over medium-high heat, add the wok oil. Stir in the thinly sliced garlic and red pepper flakes and cook until the garlic begins to lightly brown, about 1 minute. Remove metal skillet from the heat and reserve till the broccoli is ready.
Meanwhile, Simmer broccoli covered in 1 inch of water for 3 minutes. Drain the broccoli. Rinse in cold water or place in an ice bath then drain the broccoli again.
Add the rest of the oil and then the broccoli to the heated deep metal skillet with garlic and pepper flakes over medium-high heat and toss until tender and it begins to lightly color about 3-4 minutes.
Season the broccoli with soy sauce, brown sugar, ginger, sesame oil, sweet rice vinegar, kosher salt, and fresh ground white pepper, to taste. Turning in metal skillet till combined. Remove from the heat.
Transfer to a serving bowl and serve with white rice or by its self if desired.