National Parmigiano Reggiano Day is celebrated on October 27th to honor the renowned Italian cheese known as the "King of Cheese." This day, founded by the Consortium of Parmigiano Reggiano, encourages cheese lovers, chefs, and families worldwide to appreciate and incorporate this cheese into their meals. Typical customs include preparing dishes featuring Parmigiano Reggiano, such as the traditional recipe "riso cacio e pepe," which highlights its unique flavor. The day also serves as an opportunity for people to learn about the cheese's rich history, which involves a meticulous production process using raw, unpasteurized cow's milk and aging for a minimum of twelve months. Participants are encouraged to share their experiences and recipes on social media using the hashtag #NationalParmigianoReggianoDay. Overall, the day celebrates not only the cheese itself but also the cultural heritage of the Emilia-Romagna region in Italy, where it is produced.