Why do french people eat yule log?

French people eat yule log, or "bûche de Noël," as a traditional dessert during the Christmas season. The cake symbolizes the yule log that families would burn in the fireplace to celebrate the winter solstice and the return of light. Made from sponge cake rolled with cream and often decorated to resemble an actual log, it has become a festive staple in French holiday celebrations. Its rich flavors and festive presentation make it a beloved treat during this time of year.