1. In general, when most produce starts to look sad it is only because it is dehydrated! This is especially true for carrots, lettuce and all other greens. All they need is a good soak in a bowl of cold water in the fridge and they will perk right back up.
2. Berries: Unless you are going to eat them right away, clean your berries in a mixture of 10 parts water and 1 part white vinegar. Swirl the berries in the mixture, drain, rinse, and put them in the fridge. The solution is diluted enough that you won't taste the vinegar. Raspberries will last a week or more, and strawberries go almost two weeks without getting moldy and soft.
3. Fresh Herbs. Do not wash the herbs until you are ready to use them, but you can store fresh herbs in water. Trim the bottoms and set them in a glass or coffee mug of water in the fridge and cover with plastic. This will keep them fresh and happy until cooking time. Asparagus is also best stored this way. If you are not using the herbs, you can cut them up and place them in an ice cube tray. Add olive oil on top and then freeze, The herbs will infuse the oil while freezing and the ice cubes are great for cooking; just pop one out and use it as the start of a dish.
4. Celery and Broccoli: Wrap it in tin foil before storing it in the fridge. I'm not sure why this works, but it sure does! This will keep it crisp and fresh for a month or longer. Never have limp celery again.
5. Mushrooms: Keep mushrooms in a paper bag, not plastic. Trapped moisture makes mushrooms go bad. Remove them from any packaging when you receive them and store the mushrooms in a small brown paper lunch bag in the fridge. The paper will absorb any excess moisture and they will stay fresh a very long time. Do not wash them before you are ready to use them.
6. Stone fruits (peaches, nectarines, plums and apricots) and avocados, tomatoes, mangoes, melons, apples, and pears will continue to ripen if left sitting out on a counter top; while items like bell peppers, grapes, all citrus, and berries will only deteriorate and should be refrigerated. If your stone fruit doesn't slightly give to the touch when you receive it, store it on the counter top to ripen and check it daily. Once it is ripe, use it or refrigerate it immediately.
7. Bananas: Separate them from the bunch and store on your counter individually for best taste. They will slowly continue to ripen some more using this method. If you want them to ripen super fast, place them in a closed plastic bag all together. They’ll ripen quickly when their natural gas is trapped by the bag.
9. Greens / Lettuce: You can wash and chop them when you receive them so they are ready for use. Just wrap the cleaned and chopped greens in a dishcloths and store it in an opened plastic bag. It will stay fresh that way a long time. If they look limp, they are just dehydrated. Simply place them in a large bowl of ice water for a few hours and they will perk right up! This also works for beet greens. Remove any beet greens from the beets when you receive them. The green are delicious sauteed or used in soups. Keep the beets in the refrigerator in a bag.