San Blas is a Guipuzcoan sweet bread that is consumed all year round. It is named after a saint who saved a child who had a fish bone stuck in his throat.
The San Blas cakes - and not the roscos, more common in other towns - are living history of Eibar and neighboring towns such as Ermua, Elgoibar or Soraluze and tell the stories of each pair of kneading hands that knead them.