2. Cut the tomatoes into small pieces, shred the onions and ginger, and put them on a plate for later use.
3. Peel the potatoes and shred them.
4. Cut the potatoes, rinse them with cold water, and wash off the starch in the potatoes.
5, put a little cooking oil in the pot, add onion, ginger and tomatoes in turn and stir fry together.
6. After the tomatoes are fried with sand, add potatoes and stir fry together.
7, put a little salt in the dish, the potatoes are slightly soft, and the potatoes can be cooked.