Fruits are important for your diet. The next trick involves using a homemade solution to keep fruit, especially those delicious berries, fresh. Next time you come from the farmers market with a bag or two of berries, you can apply the next tip in order to prevent them from beginning to lose their luster. The secret lies in vinegar! Because of its properties, vinegar can kill any mold spores or other kind of bacteria from the surface of the berries, that probably causes them to lose their freshness. You have to prepare a mix of 1 part white or apple cider vinegar and 10 parts water, in which you dump the berries and swirl them around for a bit. After that, drain them and place in the refrigerator. It will allow raspberries to last as fresh for another week or so.