Chinese spicy sour potatoes, also known as suān là tǔ dòu sī, is a popular Chinese street food that is simple to make at home. The dish consists of thinly sliced potatoes that are cooked until crispy and then coated with a tangy, spicy sauce. The sauce is typically made with vinegar, soy sauce, sugar, and chili oil, and is often garnished with scallions and cilantro.
To make this dish, the potatoes are first sliced into thin rounds and then fried until crispy. While the potatoes are frying, the sauce ingredients are combined in a separate bowl and mixed together. Once the potatoes are crispy and golden brown, they are removed from the oil and tossed in the sauce until coated evenly.
The resulting dish is a delicious and satisfying combination of crispy potatoes and spicy, tangy sauce that is perfect as an appetizer or side dish. It is a popular street food in China and is enjoyed by people of all ages.