Luo han guo, also known as monk fruit, is a small green fruit native to southern China. It has been used for centuries in traditional Chinese medicine for its natural sweetness and potential health benefits. The fruit contains mogrosides, which are natural compounds that provide its sweet flavor without calories. Luo han guo is often used as a sugar substitute in various food and beverage products. It is considered safe for most people and may be beneficial for those looking to reduce sugar intake. Additionally, it has antioxidant properties, making it a popular choice among health-conscious consumers.