The orange is the beloved fruit of the Mediterranean, so it does come as surprise to find out that the fruit has its origins in the belt around the Himalayas and South-West China. It is widely supposed that the Moors brought the bitter orange to Europe, followed by Vasco da Gama, who brought the sweet variant back to Portugal following his voyage to India. It also became an essential ingredient in folk remedies across cultures, especially for its ability to enhance immunity and fight colds, coughs, fatigue and depression.