Kerala banana chips are produced from under-ripe banana slices deep-fried in coconut oil. These chips are dry (like potato chips) and salted.
Kerala banana chips are locally known as nenthra-kaaya oopperi or upperi. Both ripe and unripe plantains are used for this variant. Sometimes they are coated with masala or jaggery to form spicy and sweet variants. Almost plain banana and platain chips are called pachkkaya varuthathu and kaya upperi respectively; sweet jaggery-banana chips are called sharkara upperi. It is an integral part of the traditional Kerala meal called sadya served during weddings and traditional festivals such as Onam.
Kasaragod, Kerala, India