Clean, wash and trim your bok choy. If the bok choy are larger, cut in half lengthwise and blanch in salted water for 1-2 minutes until bright green.
Mix together oyster sauce, soy sauce, shaoxing wine, sugar, white pepper, sesame oil, chicken stock & corn starch.
In a pan, fry garlic for 15 seconds until fragrant; then add your sauce. Simmer over medium high heat for 2-3 minutes until thickened. Immediately spoon over bok choy & enjoy!