Peppercorns are one of the most popular spices in the history of the world. Black peppercorns are harvested green and dried in the sun until they turn black and wrinkled. Used in both sweet and savory dishes, add peppercorns to soups, salads, and dips for a spicy little kick. Add 1/2 teaspoon ground pepper to every 4 cups of liquid when seasoning soups and sauces. Peppercorns might help aid in digestion and support immune function.