With their mild and delicate flavour, spring onions, also known as salad onions or scallions, are small, immature onions that have been picked before the bulb has swollen. They have a narrow white bulb and a tender green shoot which is also used in cooking and has a subtle, fresh onion flavour. As popular as ever and available year round, they have become an essential ingredient in Asian cooking, as a salad ingredient, and as a garnish.