What is the name of the New Year's Eve celebration in Spain where people eat 12 grapes at midnight?

The Spanish New Year's Eve tradition of eating 12 grapes at midnight is called Las doce uvas de la suerte, meaning “the twelve grapes of luck.”

Participants try to eat one grape with each stroke of the midnight clock. Each grape represents one month of the coming year, and successfully eating all 12 is believed to bring good fortune. The custom is especially associated with the clock at Madrid's Puerta del Sol, whose chimes are broadcast nationally.

The practice became popular in Spain in the early twentieth century. One commonly repeated account links its expansion to a surplus grape harvest in 1909, when growers promoted the custom to sell more fruit, although the tradition had earlier roots among urban celebrants. Similar grape-eating customs have since spread to parts of Latin America and elsewhere.