Today olives are treated with sodium hydroxide to hydrolyze oleuropein. Olives subsequently exposed to air oxidize, and become black. Kiwi Fruit Native of Asia, most commercial kiwi is grown in New Zealand. Bright green pulp of fruit contains many tiny black seeds. Juice from this fruit is a natural meat tenderizer.
Nuts are dry fruits.
Edible portion of a nut is the embryo, with its greatly enlarged cotyledons containing endosperm. It was once thought in Europe that this property could extend to insects, thus walnut trees were planted around barns and homes to repel insects. Pecans have been selectively bred for thin, easy to crack shells. Extensively grown in the southeastern U.S., pecans have become prominent in that region's cuisine. Filberts or hazelnuts are native across north temperate latitudes.