Anaheim chili pepper, also known as New Mexico chili, is a type of medium to mild chili pepper that is commonly used in Mexican and Southwestern cuisine. It is named after the city of Anaheim in California, where it was first grown in the late 19th century. The Anaheim chili pepper is typically around 6 to 10 inches long, and 1 to 2 inches wide, with a curved, elongated shape. It has a thin, slightly wrinkled skin that can be green or red, depending on its level of ripeness.