Noina (perhaps the most common name in Asia is Sugar apple, Annona scaly, Sugar-apple, Sweetsop, Noi-na). It really resembles an apple in shape and size, but it has an original appearance with peculiar “scales”. This lumpy green fruit is very widely cultivated in countries with a tropical climate – from South America to Polynesia. (Many people often confuse it with the Guanabana fruit, they are really similar, as they are “close relatives”, but this is not the same! Guanabana is also often called the “sugar apple”, but again, by mistake.)
Under the lumpy peel is sweet flesh, it tastes very nice and hard inedible bones (up to 60 pieces). The ripe fruit should be soft when pressed, its flesh will be really tasty, tender and you can safely eat it with a spoon. If you come across an unripe copy (hard to the touch), then it is better to just let it lie down for a couple of days and mature.
And the benefit of Noina is the rich content of vitamin C, various amino acids and calcium.