Once your fondant is securely covered in the plastic wrap, place it in an airtight container. Leave the container at room temperature for up to three months.
Storing Wrapped Fondant Cake in Air Tight Container
Once you are ready to use, roll out your ball or log of fondant. If your fondant is a bit hard, you can add 1/8 teaspoon of water for every 24 ounces or a small amount of vegetable shortening.
Fondant can easily become dry when you are working with it. To keep it soft and supple while working, apply vegetable shortening to your hands. This will keep it easy to work with as you knead, roll, and shape it.