Drizzle 2–3 tablespoons of neutral oil into a large pan or wok over medium-high heat.
Crack the eggs into a bowl, whisk well, and mix in the MSG.
Add the minced garlic and the white parts of the green onions to the pan. Sauté until fragrant, about 30 seconds.
Add the day-old jasmine rice, breaking up any clumps. Stir-fry for 1–2 minutes.
Add soy sauce, fish sauce, and sugar. Toss until the rice is evenly coated.
Push the rice to one side of the pan to create a well. Pour in the beaten eggs and scramble until just set, then mix into the rice.
Gently fold in the lump crab meat, being careful not to break it up too much. Cook for another 1–2 minutes until heated through.
Garnish with the green parts of the green onions and fresh cilantro. Serve with sliced cucumbers and lime wedges on the side.
Enjoy immediately while hot.