Yes it's edible. It's definitely an 'acquired' taste though.
The outer layer of an avocado is called the skin or peel. It is typically dark green to black in color, depending on the variety, and serves to protect the fruit inside. The skin can be smooth or rough, and while it is edible, many people choose to remove it before consuming the flesh.
The outer layer of the tooth is enamel.
The outer layer is atmosphere.
The epidermis is the outer layer of skin. The dermis is beneath the epidermis.
The epidermis is the outer layer of skin. The dermis is beneath the epidermis.
The outer layer of the sun is called the corona.
The stratum corneum is the tough outer layer of the skin.
Mercury's outer layer is solid rock like the rest of it
There is no specific term for the outer layer of a volcano.
The mantle is the layer above the outer core.
cell membrane
A thin rocky outer layer is known as the: Crust