1. Wash the tenderloin, cut into shreds, add egg white, soy sauce, starch and cooking wine into the shreds and mix well;
2. Wash and cut the shallot into fine threads;
3. Add oil in the pot, put in the shredded meat after heating and quickly slide it away, and remove it immediately after the meat turns white;
4. Leave a proper amount of oil in the pot, heat it up in high heat, put in tomato sauce, sweet noodle sauce and white sugar, change the heat to stir fry with a spatula, stir fry until the sauce is fragrant, and bubbles appear, change the heat to add shredded meat and stir fry quickly until it tastes good, and pour the sesame oil into the pot;
5. Put the fried shredded meat on the plate and sprinkle with shredded onion.
When frying the sauce, fry it slowly with a small heat of warm oil and stir constantly, otherwise the sauce will be easy to paste.