bearing citrus fruit resembling a cross between an orange and a grapefruit, but in a pear-shape. The fruit ripens from green to yellow.
The oil is one of the most widely used in the perfumery and toiletry industry and forms, together with neroli and lavender, the main ingredient for the classical 4711 Eau-de-cologne fragrance. It is used to flavor Earl Grey tea.
The name is derived from the city Bergamo in Lombardy, Italy, where the oil was first sold.