Potatoes contain a lot of potassium and vitamin C, but because of its high starch content, it is easy to paste the pot when frying, and the taste is sticky and not refreshing, so before frying, it is usually blanched. Generally, the shredded potatoes are blanched for about 2 minutes, and the thinner shredded potatoes are blanched 1 minute, while the thicker shredded potatoes need to be blanched for more than 2 minutes.
Generally, after blanching, the effect of removing starch is better, and it will have a more crisp taste when cooking.
However, it should be noted that when blanching, the blanching time should not be too long. If you add some pepper oil before taking out the pot, it won't take a long time to stir fry for 10 second, so that the formed potato shreds are soft on the outside and crisp on the inside, with a fragrant smell.