Rest assured, swapping one for the other won't ruin your favorite recipes.
Spring onions are slimmer and narrower, resembling a mini leek, while bulb onions have a rounded bulb at the base. For most home cooks, the difference is subtle. They're actually the same onion plant—harvested young in spring as spring onions or later in autumn as mature bulb onions.
Read also: Recipe for grilled tofu steaks with spring onion
You can easily regrow both spring onions and bulb onions. Trim about 5 centimeters from the bottom and stand the roots in a glass of water. Refresh the water every other day, and in roughly two weeks, you'll have fresh new growth. You can also re-grow these 7 vegetables.
