Depending on the recipe, you can use onions or green onions in place of leeks. It won't be identical but it can be close.
Shallots, leeks, garlic, or celery can be used as substitutes for onion in soup.
A good substitute for onion in recipes is shallots, leeks, or garlic. These ingredients can provide a similar flavor profile to onions in dishes.
A good substitute for onions in a recipe is shallots, leeks, or garlic. These ingredients can provide a similar flavor profile to onions in dishes.
Endive, shallots, fennel, and leeks
Some people may say that onions or shallots are a good substitute, but be careful: they may give a strong unwanted flavour where a more subtle flavour would have been better.
I can't think of a spice to substitute chives, but you should be able to substitute chives with spring onions or small and very finely diced shallots.
related but not alike. shallots are a small bulb like an onion but spliting into smaller segments like garlic - also tasting somewhere between onion and garlic. leeks are a thick stem like an overgrown spring onion. they are fibrous and need cleaning and cooking. milder than onions they have an earthey flavour that penetrates and works with other root veg and herbs.
Onions, garlic, leeks, chives, etc.en.wikipedia.org/wiki/Allium
Chopped onion, chopped leek, or chopped shallots. Amount remains the same.
Onions are the edible bulb from a genus of plants called Allium. Onions are a vegetable and are related to garlic, shallots, leeks, scallions, chives, and green onions (underdeveloped scallions).
Chopped onion, chopped leek, or chopped shallots. Amount remains the same.
http://www.newton.dep.anl.gov/askasci/gen06/gen06199.htm this website is helpfull with understanding what foods have sulfur in it