Cut eggplant into 1/2-inch thick angled slices about 3-4 inches long.
Steam eggplant pieces for 10-12 minutes until tender. Pat dry with paper towels.
In a small bowl, whisk together light soy sauce, dark soy sauce, sugar, white pepper, cornstarch, stock, and MSG until smooth.
Heat oil in a large pan or wok over medium-high heat. Add chopped garlic and minced ginger, sautéing for 30 seconds until fragrant.
Add steamed eggplant to the pan and stir-fry for 2 minutes until lightly browned on edges.
Pour the sauce mixture over the eggplant and stir continuously until sauce thickens and becomes glossy, about 2 minutes.
Serve immediately over steamed rice.