Guanabana is a large “family” of fruits similar to mango. In different places around the globe, different versions of the fruit are grown, including the custard apple, cherimoya, soursop, and sweetsop. Flavor differences among these fruits can be striking.
When guanabana is ready for harvest, the outer skin is a deep, rich, green color, with many soft, evenly spaced spikes. When ripe, the meat of the guanabana turns yellowish-white, and develops a soft, creamy texture. The guanabana contains numerous black seeds, each of which contains slightly toxic compounds. Because of this, the inedible seeds are always removed before processing or eating. Nonetheless, the guanabana is a very nutritious fruit, containing large amounts of vitamin C, vitamin B1, and vitamin B2.