Leeks on the farm serve as a fall and winter alternative to the classic yellow and red onions we have during the summer. There are many noteworthy benefits that can be found in this vegetable including anti-oxidants, calcium, magnesium, and vitamins such as A, C, K, E.  Leeks are best stored by wrapping them in paper towels and placing them in the fridge. It is best to consume them within the week.