A fridge is designed to suck out moisture, so if you’re going to store anything in a fridge, it must be in an air-tight container or it’ll dry out (that’s the refrigerator doing it’s job). Tightly covered with plastic wrap isn’t air-tight, you need a container. Depending on where you live and your climate, you might be able to store them on a dish, covered with plastic wrap on the counter, too.
