 Loaves consist of small irregularly shaped oval tending to be made with flour, water, oil, salt and aniseed ( aniseed ) without yeast so the result is a crispy bread .The tradition that once marked should be baked the day before Mass to be blessed saints .It is usually done by religious promise or request for favor agredecimiento the saints ( related to diseases of the throat or voice in the case of San Blas or illnesses related to the chest of St. Agatha ) .