1. Material: beef tenderloin 300g, pineapple100g. Accessories: persimmon pepper 25g, green pepper 25g. Seasoning: 5g of soy sauce, 5g of sugar, 5g of cooking wine, 5g of starch (pea),10g of onion, 5g of ginger, 20g of peanut oil, 5g of sesame oil, 3g of salt, 2g of pepper and 5g of garlic.

2, pineapple peeled and sliced, ginger cut into small pieces, green pepper cut into small pieces, onion cut into small pieces, garlic made into garlic paste.

3. Wash the beef, dry it, slice it, put it in a big bowl, add soy sauce, sugar, water starch, peanut oil and salt, mix well and marinate for half an hour.

4. Pour oil into the pot, add green pepper and red pepper, stir fry, add salt and water, stir fry until cooked, and drain.

5. Heat a pan and pour oil, stir-fry garlic and beef slices thoroughly, add cooking wine, ginger slices, onion slices, peppers, rice flour and pineapple slices and stir-fry, thicken water starch and pour sesame oil.