Papaya Olarthiyathu refers to one of the stir-fried dishes from Kerala using green and raw Papaya as the main ingredient cooked with lots of spices and pieces of Coconut meat with no sauce at all. (Please see related article on Olarthiyathu /Ularthiyathu)
Picture below is of Papaya Olarthiyathu served to me during one of my visits to my family friend in Allepey, Kerala, India. Clearly seen in the picture is Black Mustard (Kadugu), slices of Onions and Curry leaves.