Orange Sour

Sour oranges are small to medium in size, averaging 7-8 centimeters in diameter, and are round to oval in shape. The rough skin transitions from green when young to red-orange when mature and is thick, aromatic, wrinkly, and bitter with small oil glands that create a slightly bumpy texture. Underneath the skin, the pale orange flesh is firm, contains a few to many small, inedible seeds, and is divided into 10-12 segments by thin, white membranes. With maturity, the center of the flesh may also become hollow. Sour oranges are juicy and acidic with an extremely bitter taste.