The lemon is the fruit of a tree in the Rutaceae family; it is yellow in colour and spherical or oval in shape, with a thick rough or smooth skin and juicy, sour and almost colourless flesh. The tree can reach 6 metres in height and has spiny branches and white or purple flowers.
Lemon needs a mild climate and, in ideal conditions, can fruit twice a year.
50% of the weight of a lemon is juice (citric acid), which is used in a variety of ways in both industry and cooking.
Lemon juice is extremely high in vitamin C.
According to some studies, lemon could be an ancient hybrid between citron and lime, although it has been an autonomous species for centuries.