1) Trim off the end of the stalks and wash the bok choy well. Separate the stalks and leaves cutting the stalks diagonally and the leaves across.
2) Place wok or frying pan on your stove and heat to medium-high. Heat olive oil. Add the garlic and ginger. Let the garlic and ginger (optional) gently sizzle in the oil for about 30 seconds.
3) Add the bok choy stalks first and cook for about 2 minutes (baby bok choy) to 5 minutes (mature bok choy) or until tender but crisp. Add leaves and stir salt and/or soy sauce (optional) in.
4) Drizzle a bit of sesame oil (optional) on finish and serve.