What is the name of the New Year's Eve celebration in Madrid's Puerta del Sol centered on twelve grapes?

The Madrid New Year's Eve celebration centered on twelve grapes is called Las doce uvas de la suerte.

The Spanish phrase means “the twelve grapes of luck.” At midnight, people try to eat one grape with each of the twelve chimes of the clock at Madrid's Puerta del Sol. The ritual is believed to bring good fortune for the twelve months ahead, with each grape representing one month.

The custom became strongly associated with the clock at the Real Casa de Correos, whose chimes are broadcast nationally. Families and groups across Spain follow the countdown on television, often preparing small trays of peeled or seedless grapes to make the rapid sequence easier.

Stories about the tradition's origin differ. One widely repeated account connects its popularization to a surplus grape harvest around the beginning of the twentieth century, while earlier elite grape-eating customs may also have influenced it. The ceremony is specifically a New Year's Eve ritual; it is not the same as Spain's tomato festival, La Tomatina.