Pani Puri is a popular Indian snack consisting of a round, hollow puri (fried bread) used to hold spiced water and fillings. It can be customized with different fillings and spices to individual tastes. Pani Puri is also known as a healthy snack that helps clear the digestive system. The document also shares an inspiring story of a pani puri vendor who supported his wife's education through his earnings, enabling her to become a software engineer.