The fruit known for having a hard outer shell and a soft interior is the coconut. Coconuts are classified as a drupe, which means they have three layers: the outer fibrous husk, the hard shell, and the inner edible part filled with coconut water and white flesh. The hard shell protects the soft interior from external elements and pests. Inside, the flesh is rich in healthy fats and provides a refreshing drink when young. Coconuts are versatile, used in a variety of cuisines worldwide, and are valued for their nutritional benefits as well as their culinary applications.