How traditional Italian gelato is made using a 180-year-old recipe

In the small Italian town of Ruvo di Puglia, siblings Giuliana and Vincenzo Paparella carry on a 180-year-old family tradition making gelato from only three ingredients: milk, sugar, and eggs. It all started in 1840 when Uncle Luigi brought the art of gelato making from the royal courts of Naples to his hometown, Ruvo, and gave it a home.