I should tell you just a bit about leeks, since I've referenced a menu item made with leeks at the bottom of my blog page.
You may not even know what they look like! Well ~ like giant green onions! Unlike onions, you have to cook them. They're great in soup ~ I sampled it last night. I don't suggest salting your soup after you serve it because leeks are high in sodium. But that's their only downside ~ far outweighed by the other wonderful nutrients that leeks possess to boost your immune system and keep you healthy (and make you healthier!)
Here's an interesting note ~ when I shopped yesterday, my neighborhood Safeway store didn't have any, but they offered to special order some. The clerk told me she used to always have them in stock, but no one was buying.
Too bad. The fresh produce section has lots of wonderful vegetables just waiting to be discovered!