In-N-Out is a popular fast-food chain based in California, known for its simple menu featuring hamburgers, cheeseburgers, fries, and milkshakes. Founded in 1948 by Harry Snyder and his wife, Esther Snyder, the restaurant emphasizes fresh ingredients and quality. The chain has a cult following, particularly for its signature Animal Style burgers and fries. In-N-Out operates primarily in the western United States, with locations in states like California, Nevada, and Arizona. The company is privately owned and has maintained a strong commitment to customer service and employee satisfaction, often ranking high in employee retention and satisfaction surveys.