Guavasteen
related to Guava, Mountain Apple, Ohia, etc.
http://en.wikipedia.org/wiki/Acca_sellowiana
from wiki
It is a warm-temperate to subtropical plant that also will grow in the tropics, but requires at least 50 hours of winter chilling to fruit
The fruit, maturing in autumn, is green, ellipsoid, and about the size of a chicken egg. It has a sweet, aromatic flavor which tastes like pineapple, apple and mint. The flesh is juicy and is divided into a clear gelatinous seed pulp and a firmer, slightly granular, opaque flesh nearer the skin. The fruit falls to the ground when ripe and at its fullest flavor, but it may be picked from the tree prior to falling to prevent bruising.
The fruit pulp resembles the closely related guava, having a gritty texture. The feijoa pulp is used in some natural cosmetic products as an exfoliant. Feijoa fruit has a distinctive, potent smell that resembles that of a fine perfume. The aroma is due to the ester methyl benzoate and related compounds that exist in the fruit.
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save our indigenous and endemic Hawaiian Plants... learn about them, grow them, and plant them on your property, ....instead of all that invasive non-native garbage I see in most yards... aloha