Ground white pepper is a versatile spice widely preferred in light-colored dishes like cream soups, white sauces, and mashed potatoes because it blends seamlessly without leaving dark specks.⏳ Shelf Life & QualityBest window: It maintains its peak flavor for about 1 to 2 years.Potency loss: It does not "expire" in a way that makes you sick, but the essential oils evaporate over time, causing it to become bland or lose its sharp heat.