Wikipedia
Patoleo (also called patoli) or turmeric leaf cake is a dish mostly prepared in the western coast of India. It is made of grated coconut, rice and jaggery, and cooked by wrapping and steaming in turmeric leaves. Konkani people prepare patolyos on the second Sunday of Shravan, on Nag Panchami and on Hartalika, the eve of Ganesh Chaturthi. Salt-free patolyos, are offered to Goddess Parvati, who the legends say had a strong craving for these sweets during pregnancy.
August 15 (Independence in India) happens to coincide with the Assumption of the Virgin Mary (a holy day of obligation). A major feast is celebrated by Roman Catholics, and patoleo is the star dish on that day. The East Indians call it Pan Mori or East Indian leaf cakes. The Mangalorean Catholics say patoley in their accent. It is also prepared on the day of Sao Joao ( St. John) feast and Konsachem fest ( harvest festival). Patolyos are sent with vojem to the groom’s house by the Catholics and Hindus.