What is a "scallion"?

Scallion, also known as green onion or spring onion, is a young onion harvested before it fully matures. It has a long, slender green stem and a small white bulb, and it is prized for its mild onion flavor and crisp texture. Scallions are commonly used as a garnish or flavoring in various culinary dishes, including salads, soups, stir-fries, and omelets. They can be chopped and added raw to dishes for a fresh, oniony flavor, or cooked briefly to soften their texture.