Potato starch can be used to make cold noodles. Cold rice noodles, which originated in Guanzhong area of Shaanxi Province, is a general name for rolled dough, rice dough, and stuffed dough. It is popular in northern China and is a rare natural green pollution-free food.

Potatoes, also known as eggs and potatoes, belong to panicum miliaceum, Solanaceae, and their tubers are edible. They are the fourth most important food crops in the world. They are native to the Andes in South America, and the main producers are China and the United States. China is the country with the largest total potato production in the world, which has high economic and nutritional value.