Perilla leaves also called “KkaenNip” (깻잎) are broadly referred to all the leaves of sesame, but among them, the leaves of perilla are used as food. Perilla is a crop grown to extract oil, and perilla leaves are harvested during growth and eaten for food. The place of origin is estimated to be Southeast Asia, and it is cultivated in Korea and China and is rarely cultivated in other countries. Perilla leaves are so nutritious that they are called “the best medicine on the table,” and their fragrant and soft texture enhances the taste buds in summer. It is used as a variety of side dishes, such as Ssam (쌈) vegetables, steamed perilla leaves, and pickled perilla leaves, and is an indispensable ingredient in Korean cuisine.