Sprouts are made from the tender stems of mustard greens cut into silk, and are divided into salty and sweet. Salty sprouts are produced in Nanxi, Luzhou, and Yongchuan in Sichuan, and were founded in 1841; sweet sprouts are produced in Yibin, Sichuan, and were called “Xufu sprouts” in ancient times. It was founded in 1921 and is now sold in Sichuan, Beijing, Tianjin, and Sichuan. Shanghai and other places. Yibin sprouts require brown-yellow color, moisturizing and shiny, uniform roots, sweet smell, salty and palatable, tender and crispy. No vegetable leaves, old stems, strange smell, mildew. The salty sprouts are green and yellow in color, moisturizing, uniform root strips, tender and crisp, fragrant, salty and palatable, without stalks, strange smells and mildew.