Vegetables

“How do you store fruits and veggies so they don’t go bad? It seems like I can never keep things fresh…”

I employ several different strategies to keep my produce in good condition until I’m ready to eat it. Here are my tricks for buying, cooking and maintaining the freshest fruits and vegetables.

Shop Regularly

Although it is probably self-evident, I think it is important to state that the freshest vegetables are the ones you bought today. They are even fresher if you get them at the farmers market (picked yesterday) rather than a grocery store that imports produce from around the world. In order to keep fresh vegetables and fruit in the house and eat healthy, you must shop for produce and groceries at least once a week.

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Shop Strategically

This is my true secret to keeping food fresh. Different foods have different shelf lives, and you can take advantage of this fact when planning your meals for the week. Always make sure you buy a few robust vegetables for your Thursday and Friday night dinners (or try to schedule your restaurant dates for later in the week).

Cruciferous vegetables (both leaves and roots) store the best and can last well over a week in the crisper. Examples of cruciferous vegetables are broccoli, kale, collards, cabbage, chard, cauliflower and brussels sprouts. Root veggies include carrots, beets, parsnips, sunchokes and potatoes.

Summer squash can last for many days in a dry plastic bag in the crisper, and winter squash can last weeks on a shelf. Eggplant has a shelf-life similar to summer squash and can be stored in the same manner. I’ve heard eggplant keeps even better outside the fridge, but I’ve never tried.

Delicate vegetables like lettuce, spinach and other spring greens are not as robust and should be eaten more quickly. Juicy fruits like berries, stone fruits and even tomatoes are more time sensitive and should be incorporated into meals earlier in the week.

Cook Intelligently

Having a rough idea of what meals you are going to make during the week can help you keep veggies fresh in several ways. In addition to planning your dishes around which vegetables last the longest, you can also prepare large batches of food early in the week then freeze or refrigerate the leftovers to eat later.

Avoid over-shopping by buying ingredients to use in multiple different dishes, rather than buying extra items for vastly divergent menus. For example, rather than purchasing red peppers for a stir fry and radishes for a salad, you can skip the radishes and add your extra pepper to your salad instead.

When buying herbs, I like to get one bunch of Italian parsley (it keeps a long time and is incredibly versatile) and only one bunch of a more delicate herb like thyme or cilantro. With this strategy you can explore recipes of different cuisines that utilize similar ingredients. For instance, if I have cilantro I may make Mexican food one night and a Vietnamese dish another night. Both incorporate fresh vegetables and herbs, but the flavor profiles of these cuisines are entirely different.

This is where it comes in handy to have a well-stocked pantry–go beyond the basics and learn to work with ingredients like fish sauce, coconut milk or quinoa. This is a great way to delve into a cuisine and explore different flavors.

Store Properly

Proper food storage can also go a long way in keeping your produce as fresh as possible. Generally speaking, most vegetables maintain their crispness best in the aptly named refrigerator compartment, the crisper. Crispers have different humidity settings than the rest of the fridge and are optimized for vegetables.

I find that leafy greens and herbs keep best in dry plastic bags or tuppers. When you get home with a large bag of salad greens from the farmers market, rinse them clean and spin them in a salad spinner. Let them sit out for an hour or so to completely dry, then put them in large tuppers to store for the week. With this strategy the crisper is not necessary.

Most fruit (including tomatoes) I keep outside the refrigerator to protect the taste, but berries are an exception. I have had fantastic luck using a reader’s suggestion to keep berries in a jar or tupper with the lid closed tight. I always put my berries away immediately after getting them home, trying to handle them as little as possible to keep any mold or bacterial spores out. I try to roll the berries into their new container without actually touching them with my hands. I buy berries much more often now 🙂

Revival Techniques

Sometimes despite your best efforts you end up with a wilted head of lettuce or a floppy bunch of basil. But if wilting is your only problem and the plant looks otherwise edible (still green and free of mold), all is not lost!

The reason plants wilt is they lose water from their cells to the environment through osmosis. But the osmotic properties of leaves can be used to your advantage. You can revive wilted greens by submerging them in a bath of cold water for 30-60 minutes, which replenishes the water in the leaves and allows them to regain their crispness! It is astounding how much they will perk up.

I learned this trick from a friend and fellow scientist–one of the many advantages of being a little nerdy.

Mold is another issue when storing fruits and vegetables, but you can sometimes salvage a batch of food if you catch it early and carefully remove all traces of it to keep it from spreading to the rest of your produce (this may involve finding a new container for the uncontaminated portion). Remember, mold is a living, growing thing that breeds more of itself. Keeping foods in sealed containers and touching them as little as possible with your hands can help control it.

Finally, fruits produce gases that cause neighboring fruits to ripen more quickly. If you have something that is perfectly ripe or over ripe, you may want to keep it away from the rest (unless of course you want the nearby fruit to ripen faster). Likewise, keeping fruits in bags will trap the gases and cause them to ripen more quickly.

Conclusion

With a few tricks and a strategic plan it is possible to keep fresh fruits and vegetables in the house for an entire week. Beyond that it is a little tough if you want your food to be truly fresh.

How do you keep your veggies fresh?

This article was originally published June 22, 2009.