01 -
Chop bok choy into smaller pieces. If you're using a bell pepper, cut it into slices. Slice up the mushrooms.
02 -
In a bowl, mix together soy sauce, oyster sauce, hoisin sauce, rice vinegar, sesame oil, sugar, and the cornstarch slurry.
03 -
In a big wok, preheat your oil. Toss in the garlic and ginger and stir them around for about half a minute until you smell them.
04 -
Throw the mushrooms into the wok and let them cook for 3 to 4 minutes, stirring, until they soften up.
05 -
Add in the bok choy and pepper slices (if using). Stir-fry for another 3 to 4 minutes, keeping the veggies a bit crisp.
06 -
Pour the sauce mixture in the wok. Toss everything until coated, and cook for 2 to 3 minutes, letting it thicken up.