First cook the rice in salted water and let it cool (best kuko rice). Incidentally, cook the frozen peas in lightly salted water and let them cool down. Then cut the pineapple slices into small pieces, as well as the tuna. Chop the onion very finely. Then make a marinade of oil, vinegar, pineapple juice, salt, pepper, sugar, parsley and a lot of curry and mix with the remaining ingredients (rice, peas, pineapple, tuna) and let it steep.