Crushed red pepper, also known as red pepper flakes or chili flakes, is a popular spice made from dried, crushed red chili peppers. It is commonly used to add heat and flavor to various dishes. The peppers used can vary, but they are typically a mix of different hot chili peppers, such as cayenne, serrano, or bird's eye chili. The process of making crushed red pepper involves drying the chili peppers and then crushing them into small flakes. The seeds and membranes of the peppers are usually included in the flakes, which contribute to their spiciness. The flavor profile of crushed red pepper can vary depending on the type of chili peppers used, but it generally adds a fiery, pungent, and slightly fruity taste to dishes. Crushed red pepper is a popular ingredient in many cuisines, including Italian, Mexican, and Asian. It is commonly sprinkled on top of pizzas, pasta dishes, soups, stews, stir-fries, and other savory foods to add a spicy kick. The spiciness level can vary depending on the amount used, so it's important to use it in moderation if you prefer milder flavors.