A friend just posted this marvellous how-to video on Facebook.  Such a pleasure to watch and listen: the ancient, fiery oven, the kneading, the young people, the old people, the singing, even if your Spanish is as bad or worse than mine.  What really thrilled me though was learning the word for “sourdough” in Spanish.  Levadura Madre.  Yeast Mother / Mother of Yeast.  Or perhaps a better translation would be Leavening Mother, referring more to quality of help to raising the dough. But the madre is madre whatever the case, and I like the way our teacher in the film refers to it as “Masa Madre” –fermented flour Mother– and sometimes just “Mother” by itself being the colloquial. Maybe in English we only remember this concept of generation and regeneration in terms of Kombucha, and vinegar. Can you think of anything else?  Or any comparable phrases in English that refer to bread?