India produces more milk than any country in the world. In this predominately Hindu society the cow is revered as a holy beast. Will travels to the bustling old city of Kolkata during the Holi festival to learn about the origins of India's most popular cheese - Paneer. After visiting the ancient cheese market he discovers how curd is used to make paneer and the city's distinctive Chennai sweets. After being invited to join his hosts for some very colourful family celebrations he visits a typical buffalo dairy for an extraordinary lesson on how to make Mozzarella, Indian-style .