Soak Jinmailang’s spicy and sour rice rolls for 30 minutes. According to relevant public information, Jinmailang hot and sour noodles need to be soaked for 30 minutes. The main powder of hot and sour noodles is mixed with sweet potatoes, sweet potatoes, and peas in proportion, and is then made by farmers using traditional manual methods. Hot and sour noodles originate from the folk in southwest China. They use local handmade sweet potato noodles as ingredients. The hot and sour noodles are named after their mainly sour and spicy taste. There are approximately 98 calories per 100 grams of hot and sour noodles. A bowl of hot and sour rice noodles, which costs about 500, contains 488 calories.