Before stir-frying shredded potatoes, we need to peel, clean, and slice them. At this point, we will notice a lot of white, cloudy substance on the knife and cutting board. This is actually caused by the high starch content in the potatoes. If stir-fried immediately, it will cause the potatoes to stick to the pan, or even burn. Therefore, before cooking, we need to rinse the sliced potatoes in clean water twice.
Although this will cause some loss of starch and water-soluble vitamins, it will prevent the potatoes from sticking to the pan when stir-fried. During cooking, add a little vinegar, and the resulting shredded potatoes will be refreshingly sour and delicious.