1. Cut the cooked beef into even thick strips.
2. Peel fresh potatoes, cut into strips similar to beef strips, and cut carrots into the same strips.
3. Put the potato chips in the pan in cold oil and fry them until golden brown. Add the carrot sticks and fry them a bit, then take them out of the pan together.
4. Drain the excess oil.
5. Leave a small amount of oil in the wok, add the garlic pieces, and the green onions until fragrant.
6. Add the beef strips and stir fry twice.
7. Add broth or a spoonful of hot water, add soy sauce, the taste is very fresh and enhances the color and fragrance.
8. Add potato chips, carrot sticks, pepper, sugar, and heat for 5 minutes. When the soup becomes less viscous, sprinkle the monosodium glutamate and stir-fry gently.
9. Put it out of the pot and serve it on the plate.
