A scallion, (also known as a spring onion, salad onion or green onion in many countries) is an edible plant the genus Allium. The upper green portion is hollow. It lacks a fully developed root bulb. They are milder than most onions. They may be cooked or used raw, as a part of salads or Asian recipes. Diced scallions are used in soup, noodle and seafood dishes. Eastern sauces commonly remove the bottom quarter-inch before use. The species most commonly associated with the name is the Welsh onio… (More on Scallion)