Spring onions belong to the onion family, along with leeks, garlic and chives. They are used as a basic ingredient to add flavor to dishes, but they are also delicious eaten on their own. spring onions are firm with unblemished bulbs and bright green perky leaves.They have a combination of the benefits of onions and greens. They are an excellent source of vitamin K and vitamin C, and a very good source of vitamin A too. Spring onions can be added to dal and make it a much tastier dish.