White pepper is a spice produced from the dried fruit of the pepper plant, Piper nigrum, as is black pepper. It is usually milder than black pepper, with less complex flavor. Both whole and ground white pepper are available.Storage:Store white pepper in a tightly sealed container away from light. The peppercorns will store longer than ground white pepper, which will lose its flavor and potency after about three months. It won't spoil and will be safe to use, but you may need more to get the same flavor in your dish. For this reason, its wise to purchase ground white pepper in smaller quantities that you will use in a shorter time frame.