In wok, bring some water to a boil. Add spinach, blanch briefly, remove, and drain.
Empty water from wok, heat to dry, add oil and swirl to heat well. Add garlic and toss just a moment until fragrant but not burned. Add spinach, salt, and MSG, tossing after each addition.
Turn off heat, drizzle with sesame oil, transfer to platter, and serve as part of a Chinese meal. (For a Chinese meal, serve rice, a soup, and one dish per person, selecting a balanced variety of dishes.).