Sport peppers are small, green chili peppers that are commonly used as a condiment in various dishes, particularly in Chicago-style hot dogs. They are typically pickled and have a mild to moderate heat level, making them a popular choice for adding flavor without overwhelming spiciness. These peppers are usually about one to two inches long and are known for their tangy taste. In addition to hot dogs, sport peppers can also be used in salads, sandwiches, and other savory dishes, enhancing the overall flavor profile with their unique zest.