Scallion (scientific name: Allium fistulosum), also known as green onion, bunching onion, leaf onion, hu onion, winter onion, Han onion, mu onion, onion sprouts, vegetable uncle, water onion, and herb of harmony, is a perennial herbaceous plant. Its leaves are cylindrical, hollow in the middle, fragile, and tend to break easily, presenting a green color. In East Asian countries and various Asian communities around the world, scallions are commonly used as a seasoning or vegetable and play an important role in Eastern cuisine.