These violet coloured and flavoured sweets are sure to remind you of the sweet treats that your grandmother gave you when you were a child. They have been a popular treat for Madrilenians for over 100 years. It is still a mystery why this sweet symbol of Madrid was created. However, it is said that King Alfonso XIII used to buy 2 of these violet sweet boxes to give 1 to Queen Victoria Eugenia and the other to his secret lover.