This stir fry commonly uses vegetables such as broccoli, bok choy, or spinach, but just about anything will work.
Combine cornstarch, sugar, salt, msg, and 1 Tbsp. water in a small bowl; set aside.
Heat a wok over high heat. Add oil, turn off heat, and swirl to coat. Return heat to medium-high, add garlic and ginger, and fry briefly until fragrant.
Add vegetables, mix briefly, and then add sauce. Fry briefly until liquid evaporates and remove from wok.
Made a double with broccoli. Easy and good.
Made with 525g bok choy in a 14" pan. Used galangal instead of ginger and no MSG. The pan wasn't large enough to properly stir-fry the bok choy but it turned out alright.
Made a double with Chinese leaf mustard, which was good but slightly bitter.