[header] How to keep ginger fresh [title] Cover exposed fresh ginger with aluminum foil. [step] If you haven't cut into your ginger yet, then you can store it as-is on the counter or in your pantry. However, once you cut a piece off, you'll need to cover up the exposed inside area in order to keep your ginger as fresh as possible. 
Simply tear off a small piece of aluminum foil and wrap it around the exposed area. Then, put it back onto your countertop or in your pantry until you need to cut off another piece.