Kyotango City has a large temperature difference between day and night, which creates ideal conditions for increasing sugar content, making it a popular area for cultivating Earl's melons, the epitome of high-quality melons.
Kotobiki Melon, named after Kotobiki Beach, a national natural monument famous for its singing sand, is harvested in the morning and immediately brought to the shipping area by the producers themselves, where they undergo rigorous visual inspection of size, mesh beauty, etc., and only those with a sugar content of 15 degrees or more, as tested using a non-destructive sugar content meter, are called "Kotobiki Melon" and shipped and sold.