Leafy greens figure prominently in every Phase of the South Beach Diet, but for the freshest tasting greens, it's important that you buy and store them properly. There are two main reasons that greens go bad: Either they are bought past their prime or they're sitting in your refrigerator too long. Here are some tips for keeping your greens fresh and delicious!

Purchasing
Whole heads of lettuce, like romaine and endive, tend to stay fresh longer than loose-leaf greens and prewashed bagged lettuce. When you're selecting your greens, take a peek at them to make sure the leaves aren't brown or wilting. Instead, the leaves should be crisp and evenly colored.

Storage
Greens need air — it's the lack of air that accelerates decay. Some storage-bag makers now sell perforated bags that allow air and moisture to circulate. You can also make your own perforated bag: Start with a resealable plastic bag and make multiple stabs with a small, thin knife. Finally, make sure to eat your greens within a few days. Otherwise, they'll start to perish.

Preparation
Once greens are thoroughly washed under cold running water, dry the leaves with a salad spinner or pat them with a paper towel. If you have leftovers, wrap them in paper towels and toss them into a perforated bag.

Leafy greens are very versatile. Toss some greens together for a salad, sauté them in extra-virgin olive oil, or steam them (on the stovetop or in the microwave) for a simple side dish. Add your choice of South Beach Diet-approved dressing or seasonings and enjoy!