Leeks

Peak Season: Year-round

Perfect Pick: Green, crisp tops with unblemished white root ends. Gravitate toward small- to medium-size leeks, which are less woody and tough than larger ones. Those with spotted or yellowing leaves should be ignored.

Handle with Care: Stored loosely wrapped in plastic in the fridge, they'll keep fresh for a week.

The Payoff: Good amounts of eye-protecting lutein, manganese, and vitamins A, C, and K.