A scallion also commonly known as spring onion, green onion, or salad onion. They are a variety of young onions with a long, thin white base that has not yet developed into a bulb and long straight green stalks that look like giant chives. Both the white base and the green stalks are commonly eaten.
Scallions have a milder flavor than mature onions, but a bit stronger than chives. The tops of these green onions may be used as a substitute for chives in many recipes.
Although scallions (green onions) may be cooked, either whole or chopped, they are perhaps most enjoyed fresh as in salads, as a crudite or as a last minute topper for sauces.